selecting line, its end nodes and pressing Q throws an error

[anonymous]

What steps will reproduce the problem?

1. select line, whose start and end nodes are connected to other lines.
2. shift+select end node
3. shift+select start node
4. Press Q

What is the expected result?

idk, i was trying to get a 90 angle, wanted it perpendicular, thats all.

What happens instead?

throws an error

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

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2020-02-26 10:50:27 +0100 (Wed, 26 Feb 2020)
Revision:15937
Build-Date:2020-02-26 09:52:41
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (15937 en) Windows 10 64-Bit
OS Build number: Windows 10 Pro 1803 (17134)
Memory Usage: 194 MB / 888 MB (34 MB allocated, but free)
Java version: 11.0.1+13-LTS, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1366x768
Maximum Screen Size: 1366x768
Dataset consistency test: No problems found

Plugins:
+ reverter (35313)
+ undelete (35313)

Last errors/warnings:
- W: Unable to request certificate of https://grca.nat.gov.tw
- W: Unable to request certificate of https://grca.nat.gov.tw
- W: Missing plugin main version in plugin Mapillary
- W: Missing plugin main version in plugin wikipedia
- W: Missing plugin main version in plugin josm-batch-downloader
- E: Handled by bug report queue: java.util.NoSuchElementException


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (19) of main
java.util.NoSuchElementException
	at java.base/java.util.LinkedList$ListItr.next(LinkedList.java:894)
	at org.openstreetmap.josm.command.SequenceCommand.<init>(SequenceCommand.java:56)
	at org.openstreetmap.josm.command.SequenceCommand.<init>(SequenceCommand.java:65)
	at org.openstreetmap.josm.actions.OrthogonalizeAction.orthogonalize(OrthogonalizeAction.java:231)
	at org.openstreetmap.josm.actions.OrthogonalizeAction.actionPerformed(OrthogonalizeAction.java:171)
	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.JComponent.processKeyBindings(JComponent.java:2985)
	at java.desktop/javax.swing.JComponent.processKeyEvent(JComponent.java:2862)
	at java.desktop/java.awt.Component.processEvent(Component.java:6409)
	at java.desktop/java.awt.Container.processEvent(Container.java:2263)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5008)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4840)
	at java.desktop/java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1950)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:871)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1140)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:1010)
	at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:836)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4889)
	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:4840)
	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)

[Don-vip]

In 16175/josm:

fix #18953 - OrthogonalizeAction: don't produce empty commands sequence