id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
12073	"""sort values"" results in exception"	malenki	team	"==== What steps will reproduce the problem?
1. Have a data layer in JOSM with at least one object with two tags
2. select it
3. Click on ""Value"" in the properties window.

==== What is the expected result?

Sort values

==== What happens instead?

Exception

==== Please provide any additional information below. Attach a screenshot if possible.
The possibility to sort keys and values and seemingly also the issue was introduced between r8973 and r8985, sorting keys works fine.
I set the priority to ""critical"" since it is nearly impossible to continue mapping after having triggered this exception because every selection and de-selection of tagged objects will throw another exception.
Tested with blank ~/.josm
Exists also in r8993

{{{
Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2015-11-03 02:34:09
Last Changed Author: Don-vip
Revision: 8985
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Relative URL: ^/trunk
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2015-11-03 01:12:42 +0100 (Tue, 03 Nov 2015)
Last Changed Rev: 8985

Identification: JOSM/1.5 (8985 de) Linux LMDE 2 Betsy
Memory Usage: 303 MB / 2222 MB (144 MB allocated, but free)
Java version: 1.7.0_85, Oracle Corporation, OpenJDK 64-Bit Server VM
Java package: openjdk-7-jre:amd64-7u85-2.6.1-6+deb8u1
VM arguments: [-Dsun.java2d.opengl=false]
Dataset consistency test: No problems found


Last errors/warnings:
- E: java.lang.ClassCastException: java.util.TreeMap cannot be cast to java.lang.String

java.lang.ClassCastException: java.util.TreeMap cannot be cast to java.lang.String
	at java.text.Collator.compare(Collator.java:327)
	at javax.swing.DefaultRowSorter.compare(DefaultRowSorter.java:968)
	at javax.swing.DefaultRowSorter.access$100(DefaultRowSorter.java:112)
	at javax.swing.DefaultRowSorter$Row.compareTo(DefaultRowSorter.java:1376)
	at javax.swing.DefaultRowSorter$Row.compareTo(DefaultRowSorter.java:1366)
	at java.util.Arrays.mergeSort(Arrays.java:573)
	at java.util.Arrays.legacyMergeSort(Arrays.java:478)
	at java.util.Arrays.sort(Arrays.java:470)
	at javax.swing.DefaultRowSorter.sort(DefaultRowSorter.java:607)
	at javax.swing.DefaultRowSorter.setSortKeys(DefaultRowSorter.java:319)
	at javax.swing.DefaultRowSorter.toggleSortOrder(DefaultRowSorter.java:480)
	at javax.swing.plaf.basic.BasicTableHeaderUI$MouseInputHandler.mouseClicked(BasicTableHeaderUI.java:112)
	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:270)
	at java.awt.Component.processMouseEvent(Component.java:6519)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3312)
	at java.awt.Component.processEvent(Component.java:6281)
	at java.awt.Container.processEvent(Container.java:2229)
	at java.awt.Component.dispatchEventImpl(Component.java:4872)
	at java.awt.Container.dispatchEventImpl(Container.java:2287)
	at java.awt.Component.dispatchEvent(Component.java:4698)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4501)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
	at java.awt.Container.dispatchEventImpl(Container.java:2273)
	at java.awt.Window.dispatchEventImpl(Window.java:2719)
	at java.awt.Component.dispatchEvent(Component.java:4698)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:747)
	at java.awt.EventQueue.access$300(EventQueue.java:103)
	at java.awt.EventQueue$3.run(EventQueue.java:706)
	at java.awt.EventQueue$3.run(EventQueue.java:704)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.awt.EventQueue$4.run(EventQueue.java:720)
	at java.awt.EventQueue$4.run(EventQueue.java:718)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:717)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

}}}
"	defect	closed	critical	15.11	Core	latest	fixed	template_report regression	simon04