Crash when moving to next item with upload in background

[bagage]

What steps will reproduce the problem?

1. Do some change to OSM data
2. Add items to process in Todo dialog
3. Upload changes - click "Run in background"
4. While it is running, try moving to next Todo item

What is the expected result?

Next item should be selected and zoomed.

What happens instead?

Plugin TODO crashes.

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

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2020-06-30 19:13:42 +0200 (Tue, 30 Jun 2020)
Revision:16731
Build-Date:2020-07-01 01:30:51
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (16731 fr) Linux Debian GNU/Linux bullseye/sid
Memory Usage: 619 MB / 4994 MB (259 MB allocated, but free)
Java version: 11.0.8+10-post-Debian-1, Debian, OpenJDK 64-Bit Server VM
Look and Feel: javax.swing.plaf.metal.MetalLookAndFeel
Screen: :0.0 1920x1080 (scaling 1.0x1.0)
Maximum Screen Size: 1920x1080
Best cursor sizes: 16x16 -> 16x16, 32x32 -> 32x32
Java package: openjdk-11-jre:amd64-11.0.8+10-1
Java ATK Wrapper package: libatk-wrapper-java:all-0.38.0-1
libcommons-compress-java: libcommons-compress-java:-
libcommons-logging-java: libcommons-logging-java:all-1.2-2
fonts-noto: fonts-noto:all-20200323-1
liboauth-signpost-java: liboauth-signpost-java:-

Plugins:
+ AddrInterpolation (35405)
+ HouseNumberTaggingTool (35508)
+ OpeningHoursEditor (35414)
+ PicLayer (35405)
+ apache-commons (35362)
+ buildings_tools (35500)
+ cadastre-fr (35405)
+ conflation (0.6.5)
+ ejml (35313)
+ geotools (35169)
+ jts (35122)
+ measurement (35405)
+ poly (35248)
+ reverter (35499)
+ scripting (30796)
+ terracer (35499)
+ todo (30306)
+ utilsplugin2 (35487)

Last errors/warnings:
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- E: Erreur I/O durant la création du fichier, la sauvegarde automatique sera ignorée : Nom de fichier trop long: java.io.IOException: Nom de fichier trop long
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- E: Handled by bug report queue: java.lang.IllegalArgumentException: null is not managed by us.


=== 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: null is not managed by us.
	at org.openstreetmap.josm.gui.layer.LayerManager.checkContainsLayer(LayerManager.java:392)
	at org.openstreetmap.josm.gui.layer.MainLayerManager.realSetActiveLayer(MainLayerManager.java:247)
	at org.openstreetmap.josm.gui.layer.MainLayerManager.lambda$setActiveLayer$1(MainLayerManager.java:241)
	at org.openstreetmap.josm.gui.util.GuiHelper.runInEDTAndWaitWithException(GuiHelper.java:240)
	at org.openstreetmap.josm.gui.layer.MainLayerManager.setActiveLayer(MainLayerManager.java:241)
	at org.openstreetmap.josm.plugins.todo.TodoDialog.zoom(TodoDialog.java:124)
	at org.openstreetmap.josm.plugins.todo.TodoDialog.selectAndZoom(TodoDialog.java:131)
	at org.openstreetmap.josm.plugins.todo.TodoDialog$MarkAction.actionPerformed(TodoDialog.java:326)
	at java.desktop/javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1810)
	at java.desktop/javax.swing.JComponent.processKeyBinding(JComponent.java:2900)
	at java.desktop/javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:311)
	at java.desktop/javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:266)
	at java.desktop/javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2993)
	at java.desktop/javax.swing.SwingUtilities.processKeyBindings(SwingUtilities.java:1731)
	at java.desktop/javax.swing.UIManager$2.postProcessKeyEvent(UIManager.java:1541)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:881)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1139)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:1009)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:835)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4892)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2772)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4843)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

[taylor.smock]

Closed as duplicate of #17396.

[taylor.smock]

Marked as duplicate of #17284.
The better dupe is #17284.