id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
11664	unhandled exception after hitting ok in relation editor (2 re open)	anonymous	team	"==== What steps will reproduce the problem?
1. download data (maybe not necessary)
2. select a closed way
3. make a multipolygon with tool ""create multipolygon"" (maybe not necessary)
4. open the relation editor
5. add a tag
6. hit ok to save the relation --> Exception 

{{{
Revision: 8574
Repository Root: http://josm.openstreetmap.de/svn
Relative URL: ^/trunk
Last Changed Author: bastiK
Last Changed Date: 2015-07-05 22:14:49 +0200 (Sun, 05 Jul 2015)
Build-Date: 2015-07-06 01:31:55
URL: http://josm.openstreetmap.de/svn/trunk
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last Changed Rev: 8574

Identification: JOSM/1.5 (8574 en) Mac OS X 10.10.4
Memory Usage: 791 MB / 1820 MB (141 MB allocated, but free)
Java version: 1.8.0_45, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
VM arguments: [-Dsun.java2d.opengl=true]
Dataset consistency test: No problems found

Plugins:
- TombPlugin (44)
- alignways (31241)
- buildings_tools (31241)
- geochat (31241)
- imagery_offset_db (31241)
- mirrored_download (31294)
- print (31329)
- proj4j (31241)
- reltoolbox (31241)
- reverter (31241)
- undelete (31241)
- utilsplugin2 (31241)

Last errors/warnings:
- E: java.lang.UnsupportedOperationException
- E: java.lang.UnsupportedOperationException

java.lang.UnsupportedOperationException
	at java.util.Collections$1.remove(Collections.java:4684)
	at java.util.AbstractCollection.clear(AbstractCollection.java:436)
	at java.util.AbstractMap.clear(AbstractMap.java:297)
	at org.openstreetmap.josm.gui.tagging.TagEditorModel.applyToTags(TagEditorModel.java:421)
	at org.openstreetmap.josm.gui.tagging.TagEditorModel.applyToPrimitive(TagEditorModel.java:410)
	at org.openstreetmap.josm.gui.dialogs.relation.GenericRelationEditor$SavingAction.applyExistingNonConflictingRelation(GenericRelationEditor.java:1310)
	at org.openstreetmap.josm.gui.dialogs.relation.GenericRelationEditor$OKAction.run(GenericRelationEditor.java:1425)
	at org.openstreetmap.josm.gui.dialogs.relation.GenericRelationEditor$OKAction.actionPerformed(GenericRelationEditor.java:1433)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2346)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
	at java.awt.Component.processMouseEvent(Component.java:6525)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
	at java.awt.Component.processEvent(Component.java:6290)
	at java.awt.Container.processEvent(Container.java:2234)
	at java.awt.Component.dispatchEventImpl(Component.java:4881)
	at java.awt.Container.dispatchEventImpl(Container.java:2292)
	at java.awt.Component.dispatchEvent(Component.java:4703)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4533)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)
	at java.awt.Container.dispatchEventImpl(Container.java:2278)
	at java.awt.Window.dispatchEventImpl(Window.java:2750)
	at java.awt.Component.dispatchEvent(Component.java:4703)
	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$1.doIntersectionPrivilege(ProtectionDomain.java:75)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
	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$1.doIntersectionPrivilege(ProtectionDomain.java:75)
	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	15.08	Core		fixed	template_report regression	Shinigami malenki