Hitting W to improve way produces exception

[Stereo]

What steps will reproduce the problem?

1. enable plugin
2. disable keyboard shortcut W for builtin tool named Mode: Improve Way Accuracy (W): unset "use default" setting and set "disable"
3. enable keyboard shortcut W for plugin action named Mode: Improve Way
4. restart JOSM
5. create a new layer
6. hit W

What is the expected result?

Way can be improved

What happens instead?

java.lang.IllegalArgumentException: Listener org.openstreetmap.josm.plugins.improveway.ImproveWayAccuracyAction@369726dc (instance of org.openstreetmap.josm.plugins.improveway.ImproveWayAccuracyAction) was already registered.

Please provide any additional information below. Attach a screenshot if possible.

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2017-02-26 23:10:22 +0100 (Sun, 26 Feb 2017)
Build-Date:2017-02-26 22:34:39
Revision:11639
Relative:URL: ^/trunk

Identification: JOSM/1.5 (11639 en_GB) Mac OS X 10.12.3
Memory Usage: 969 MB / 7282 MB (771 MB allocated, but free)
Java version: 1.8.0_121-b13, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: Display 69731906 1920x1200
Maximum Screen Size: 1920x1200
VM arguments: [-Djava.library.path=/Applications/JOSM.app/Contents/MacOS, -DLibraryDirectory=${HOME}/Library, -DDocumentsDirectory=${HOME}/Documents, -DApplicationSupportDirectory=${HOME}/Library/Application Support, -DCachesDirectory=${HOME}/Library/Caches, -DSandboxEnabled=false, -Dapple.laf.useScreenMenuBar=true, -Dcom.apple.macos.use-file-dialog-packages=true, -Dcom.apple.macos.useScreenMenuBar=true, -Dcom.apple.mrj.application.apple.menu.about.name=JOSM, -Dcom.apple.smallTabs=false, -Dawt.useSystemAAFontSettings=on, -Dswing.aatext=true, -Dsun.java2d.xrender=true

-Dsun.java2d.xrender=true
]
Dataset consistency test: No problems found

Plugins:
+ AddrInterpolation (33160)
+ CommandLine (33182)
+ DirectDownload (33160)
+ DirectUpload (33182)
+ FixAddresses (33182)
+ HouseNumberTaggingTool (33160)
+ ImportImagePlugin (33028)
+ ImproveWay (12)
+ OSMRecPlugin (33182)
+ OpenStreetCam (53)
+ OpeningHoursEditor (33185)
+ PicLayer (33148)
+ RoadSigns (33179)
+ alignways (33182)
+ apache-commons (32994)
+ apache-http (32699)
+ areaselector (1478814827)
+ auto_tools (1479831713)
+ buildings_tools (33004)
+ conflation (0.4.3)
+ contourmerge (1030)
+ download_along (32946)
+ ejml (32680)
+ geotools (33042)
+ gson (32680)
+ imagery-xml-bounds (33004)
+ imagery_offset_db (33004)
+ importvec (33088)
+ jts (32699)
+ livegps (33138)
+ log4j (32699)
+ mapdust (33044)
+ merge-overlap (33154)
+ namemanager (33004)
+ opendata (33156)
+ pdfimport (33004)
+ pt_assistant (33108)
+ public_transport (33166)
+ public_transport_layer (33088)
+ reltoolbox (33088)
+ reverter (33088)
+ rex (26)
+ routing (33004)
+ scripting (30764)
+ splinex (33160)
+ surveyor (33011)
+ tageditor (33021)
+ terracer (33088)
+ todo (30000)
+ turnrestrictions (33088)
+ undelete (32699)
+ utilsplugin2 (33182)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/NewTags&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/BicycleJunction&preset&zip=1
+ http://osmtools.de/josm/steps.xml
+ https://josm.openstreetmap.de/josmfile?page=Presets/Historic_Stone&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/LaneAttributes&preset&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Towers&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Golf_Course&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/PublicTransportOneClick&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Bus_lanes&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Heritage&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Historical_Objects&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/public_bookcase&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Stolpersteine&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/BuildingPreset&zip=1
+ http://zibi.openstreetmap.org.pl/kendzi/k/Simple3dPreset/s3db-preset.zip

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/Lit&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/ParkingLanes&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Surface&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Maxspeed&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Modified&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/LessObtrusiveNodes&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/AddressValidator&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Noname&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Power&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Surface-DataEntry&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/PowerMapping&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/BesideTheRoad_Speed&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/TreeCrownDiameter&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/SlovakiaBicycleRoutes&style&zip=1
- https://github.com/simon04/coloured-addresses.mapcss/raw/master/dist/coloured-addresses.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Streets&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Suburb&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Cycleways&style&zip=1
- http://maps.openstreetmap.ie/josm/townland.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/SlovakiaBicycleRoutes&style&zip=1
- https://github.com/GlassOceanos/indoor-JOSM-style/archive/master.zip
- https://josm.openstreetmap.de/josmfile?page=Styles/PublicTransport&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/PTStops&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Styles/SlovakiaBicycleRoutes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/SimpleRoofTags&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/SimpleBuildingTags&zip=1

Validator rules:
+ http://www.openrailwaymap.org/validator/openrailwaymap.validator.mapcss
+ https://josm.openstreetmap.de/josmfile?page=Rules/GermanySpecific&zip=1
+ http://www.openrailwaymap.org/validator/de-openrailwaymap.validator.mapcss

Last errors/warnings:
- E: org.openstreetmap.josm.plugins.PluginListParseException: Failed to create plug-in information from manifest for plug-in 'mbtiles.jar'. Cause: org.openstreetmap.josm.plugins.PluginException: An error occurred in plug-in mbtiles. Cause: java.io.IOException: invalid manifest format
- E: Id 'lu.geoportail.opendata.wms_endpoint' is not unique - used by 'geoportail.lu all layers' and 'geoportail.lu all layers'!
- W: Warning: Failed to scan file 'site-svn.openstreetmap.org-_applications_editors_josm_plugins_opendata_modules.txt' for module information. Skipping.
- W: Old style SideButton usage for action org.openstreetmap.josm.plugins.todo.TodoDialog$SelectAction@11efd666
- W: Old style SideButton usage for action org.openstreetmap.josm.plugins.todo.TodoDialog$AddAction@38c44bbf
- W: Old style SideButton usage for action org.openstreetmap.josm.plugins.todo.TodoDialog$PassAction@65479fbd
- W: Old style SideButton usage for action org.openstreetmap.josm.plugins.todo.TodoDialog$MarkAction@151fd365
- E: Handled by bug report queue: java.lang.IllegalArgumentException: Listener org.openstreetmap.josm.plugins.improveway.ImproveWayAccuracyAction@369726dc (instance of org.openstreetmap.josm.plugins.improveway.ImproveWayAccuracyAction) was already registered.


=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (18) of main
java.lang.IllegalArgumentException: Listener org.openstreetmap.josm.plugins.improveway.ImproveWayAccuracyAction@369726dc (instance of org.openstreetmap.josm.plugins.improveway.ImproveWayAccuracyAction) was already registered.
	at org.openstreetmap.josm.tools.ListenerList.failAdd(ListenerList.java:113)
	at org.openstreetmap.josm.tools.ListenerList$TracingListenerList.failAdd(ListenerList.java:204)
	at org.openstreetmap.josm.tools.ListenerList.ensureNotInList(ListenerList.java:104)
	at org.openstreetmap.josm.tools.ListenerList.addListener(ListenerList.java:96)
	at org.openstreetmap.josm.tools.ListenerList$TracingListenerList.addListener(ListenerList.java:181)
	at org.openstreetmap.josm.data.Preferences.addPreferenceChangeListener(Preferences.java:238)
	at org.openstreetmap.josm.actions.mapmode.MapMode.enterMode(MapMode.java:67)
	at org.openstreetmap.josm.plugins.improveway.ImproveWayAccuracyAction.enterMode(ImproveWayAccuracyAction.java:171)
	at org.openstreetmap.josm.gui.MapFrame.selectMapMode(MapFrame.java:440)
	at org.openstreetmap.josm.gui.MapFrame.selectMapMode(MapFrame.java:419)
	at org.openstreetmap.josm.actions.mapmode.MapMode.actionPerformed(MapMode.java:99)
	at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1663)
	at javax.swing.JComponent.processKeyBinding(JComponent.java:2882)
	at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:307)
	at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:250)
	at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2974)
	at javax.swing.JComponent.processKeyBindings(JComponent.java:2966)
	at javax.swing.JComponent.processKeyEvent(JComponent.java:2845)
	at java.awt.Component.processEvent(Component.java:6310)
	at java.awt.Container.processEvent(Container.java:2236)
	at java.awt.Component.dispatchEventImpl(Component.java:4889)
	at java.awt.Container.dispatchEventImpl(Container.java:2294)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954)
	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:806)
	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1074)
	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:945)
	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:771)
	at java.awt.Component.dispatchEventImpl(Component.java:4760)
	at java.awt.Container.dispatchEventImpl(Container.java:2294)
	at java.awt.Window.dispatchEventImpl(Window.java:2746)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
	at java.awt.EventQueue$4.run(EventQueue.java:731)
	at java.awt.EventQueue$4.run(EventQueue.java:729)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

=== RUNNING THREADS ===
Thread: DestroyJavaVM (56) of main

Thread: Signal Dispatcher (4) of system

Thread: RemoteControl HTTP Server (49) of main
java.net.PlainSocketImpl.socketAccept(Native Method)
java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409)
java.net.ServerSocket.implAccept(ServerSocket.java:545)
java.net.ServerSocket.accept(ServerSocket.java:513)
org.openstreetmap.josm.io.remotecontrol.RemoteControlHttpServer.run(RemoteControlHttpServer.java:103)

Thread: Timer-0 (46) of main
java.lang.Object.wait(Native Method)
java.util.TimerThread.mainLoop(Timer.java:552)
java.util.TimerThread.run(Timer.java:505)

Thread: RemoteControl HTTPS Server (50) of main
java.net.PlainSocketImpl.socketAccept(Native Method)
java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409)
java.net.ServerSocket.implAccept(ServerSocket.java:545)
sun.security.ssl.SSLServerSocketImpl.accept(SSLServerSocketImpl.java:348)
org.openstreetmap.josm.io.remotecontrol.RemoteControlHttpsServer.run(RemoteControlHttpsServer.java:407)

Thread: Java2D Queue Flusher (14) of system
java.lang.Object.wait(Native Method)
sun.java2d.opengl.OGLRenderQueue$QueueFlusher.run(OGLRenderQueue.java:203)

Thread: org.python.google.common.base.internal.Finalizer (44) of main
java.lang.Object.wait(Native Method)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
org.python.google.common.base.internal.Finalizer.run(Finalizer.java:127)

Thread: Reference Handler (2) of system
java.lang.Object.wait(Native Method)
java.lang.Object.wait(Object.java:502)
java.lang.ref.Reference.tryHandlePending(Reference.java:191)
java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153)

Thread: Timer-2 (57) of main
java.lang.Object.wait(Native Method)
java.lang.Object.wait(Object.java:502)
java.util.TimerThread.mainLoop(Timer.java:526)
java.util.TimerThread.run(Timer.java:505)

Thread: File Watcher (11) of main
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
java.util.concurrent.LinkedBlockingDeque.takeFirst(LinkedBlockingDeque.java:492)
java.util.concurrent.LinkedBlockingDeque.take(LinkedBlockingDeque.java:680)
sun.nio.fs.AbstractWatchService.take(AbstractWatchService.java:118)
org.openstreetmap.josm.io.FileWatcher.processEvents(FileWatcher.java:114)
org.openstreetmap.josm.io.FileWatcher$$Lambda$4/1109371569.run(Unknown Source)
java.lang.Thread.run(Thread.java:745)

Thread: styled-map-renderer-0 (59)
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1824)
java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1693)
java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

Thread: Map Status Collector (58) of main
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
org.openstreetmap.josm.gui.MapStatus$Collector.run(MapStatus.java:399)
java.lang.Thread.run(Thread.java:745)

Thread: TimerQueue (20) of system
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
java.util.concurrent.DelayQueue.take(DelayQueue.java:211)
javax.swing.TimerQueue.run(TimerQueue.java:174)
java.lang.Thread.run(Thread.java:745)

Thread: AWT-EventQueue-0 (18) of main
Stacktrace see above.

Thread: WeakCollectionCleaner (41) of main
java.lang.Object.wait(Native Method)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
org.geotools.util.WeakCollectionCleaner.run(WeakCollectionCleaner.java:77)

Thread: RemoteControl HTTPS Server (51) of main
java.net.PlainSocketImpl.socketAccept(Native Method)
java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409)
java.net.ServerSocket.implAccept(ServerSocket.java:545)
sun.security.ssl.SSLServerSocketImpl.accept(SSLServerSocketImpl.java:348)
org.openstreetmap.josm.io.remotecontrol.RemoteControlHttpsServer.run(RemoteControlHttpsServer.java:407)

Thread: message-notifier-0 (55) of main
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

Thread: AppKit Thread (12) of system

Thread: JCS-ElementEventQueue-Thread-4 (34) of main
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

Thread: Nashorn AST Serializer (37) of main
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

Thread: image-fetcher-0 (30) of main
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

Thread: GT authority factory disposer (35) of main
java.lang.Object.wait(Native Method)
java.util.TimerThread.mainLoop(Timer.java:552)
java.util.TimerThread.run(Timer.java:505)

Thread: RemoteControl HTTP Server (48) of main
java.net.PlainSocketImpl.socketAccept(Native Method)
java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409)
java.net.ServerSocket.implAccept(ServerSocket.java:545)
java.net.ServerSocket.accept(ServerSocket.java:513)
org.openstreetmap.josm.io.remotecontrol.RemoteControlHttpServer.run(RemoteControlHttpServer.java:103)

Thread: Java2D Disposer (15) of system
java.lang.Object.wait(Native Method)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
sun.java2d.Disposer.run(Disposer.java:148)
java.lang.Thread.run(Thread.java:745)

Thread: AWT-Shutdown (17) of system
java.lang.Object.wait(Native Method)
java.lang.Object.wait(Object.java:502)
sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:295)
java.lang.Thread.run(Thread.java:745)

Thread: Nashorn AST Serializer (36) of main
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

Thread: Finalizer (3) of system
java.lang.Object.wait(Native Method)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)

Thread: Nashorn AST Serializer (38) of main
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

Thread: Nashorn AST Serializer (39) of main
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
java.util.concurrent.LinkedBlockingDeque.pollFirst(LinkedBlockingDeque.java:522)
java.util.concurrent.LinkedBlockingDeque.poll(LinkedBlockingDeque.java:684)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

Thread: Timer-1 (52) of main
java.lang.Object.wait(Native Method)
java.util.TimerThread.mainLoop(Timer.java:552)
java.util.TimerThread.run(Timer.java:505)

[Stereo]

Closed as duplicate of #13896.