id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
14810	java.lang.UnsupportedOperationException	dieterdreist	team	"==== What steps will reproduce the problem?
1. start josm
2. draw a way
3. 

==== What is the expected result?
normal operation
==== What happens instead?
unhandled error
==== 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: 2017-05-16 00:07:12 +0200 (Tue, 16 May 2017)
Build-Date:2017-05-16 01:32:08
Revision:12192
Relative:URL: ^/trunk

Identification: JOSM/1.5 (12192 en) Mac OS X 10.11.6
Memory Usage: 866 MB / 1820 MB (426 MB allocated, but free)
Java version: 1.8.0_121-b13, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: Display 188875522 1920x1080, Display 458628992 1920x1080
Maximum Screen Size: 1920x1080
VM arguments: [-Dsun.java2d.opengl=true]
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (33185)
+ PicLayer (33148)
+ SimplifyArea (33004)
+ alignways (33182)
+ apache-commons (32994)
+ apache-http (32699)
+ buildings_tools (33004)
+ ejml (32680)
+ fieldpapers (v0.4.1)
+ geochat (33088)
+ geotools (33042)
+ imagery_offset_db (33309)
+ jts (32699)
+ log4j (32699)
+ measurement (33088)
+ opendata (33245)
+ photo_geotagging (33088)
+ print (33260)
+ reltoolbox (33311)
+ reverter (33088)
+ undelete (33263)
+ utilsplugin2 (33297)
+ wikipedia (33288)

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/MaxspeedIcons&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1

Last errors/warnings:
- E: Handled by bug report queue: java.lang.UnsupportedOperationException
- E: Handled by bug report queue: java.lang.UnsupportedOperationException


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (18) of main
java.lang.UnsupportedOperationException
	at java.util.Collections$UnmodifiableCollection.add(Collections.java:1055)
	at org.openstreetmap.josm.data.osm.Way.save(Way.java:311)
	at org.openstreetmap.josm.command.Command$CloneVisitor.visit(Command.java:61)
	at org.openstreetmap.josm.data.osm.Way.accept(Way.java:211)
	at org.openstreetmap.josm.command.Command.executeCommand(Command.java:188)
	at org.openstreetmap.josm.command.ChangeCommand.executeCommand(ChangeCommand.java:80)
	at org.openstreetmap.josm.command.SequenceCommand.executeCommand(SequenceCommand.java:65)
	at org.openstreetmap.josm.data.UndoRedoHandler.addNoRedraw(UndoRedoHandler.java:53)
	at org.openstreetmap.josm.data.UndoRedoHandler.add(UndoRedoHandler.java:81)
	at org.openstreetmap.josm.actions.mapmode.DrawAction.mouseReleased(DrawAction.java:613)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:290)
	at java.awt.Component.processMouseEvent(Component.java:6533)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
	at java.awt.Component.processEvent(Component.java:6298)
	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.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
	at java.awt.Container.dispatchEventImpl(Container.java:2280)
	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)
}}}
"	defect	closed	blocker	17.05	Core		fixed	template_report regression	michael2402