IllegalArgumentException on starting Josm

[mcheck]

What steps will reproduce the problem?

1. start josm withour bug report...
2. bug report appear

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

URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Rev: 6005
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last Changed Author: Don-vip
Revision: 6005
Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2013-06-13 01:35:38
Last Changed Date: 2013-06-13 02:16:00 +0200 (Thu, 13 Jun 2013)

Identification: JOSM/1.5 (6005 it) Linux Ubuntu 12.04.2 LTS
Memory Usage: 149 MB / 888 MB (100 MB allocated, but free)
Java version: 1.8.0-ea, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
VM arguments: [-Xmx1000m]

Plugin: AddrInterpolation
Plugin: FastDraw
Plugin: FixAddresses
Plugin: HouseNumberTaggingTool
Plugin: ImportImagePlugin
Plugin: OpeningHoursEditor
Plugin: PicLayer
Plugin: RoadSigns
Plugin: SimplifyArea
Plugin: buildings_tools
Plugin: continuosDownload
Plugin: contourmerge
Plugin: dataimport
Plugin: download_along
Plugin: ext_tools
Plugin: geotools
Plugin: graphview
Plugin: importvec
Plugin: irsrectify
Plugin: jts
Plugin: lakewalker
Plugin: log4j
Plugin: mirrored_download
Plugin: multipoly-convert
Plugin: namemanager
Plugin: opendata
Plugin: openstreetbugs
Plugin: pbf
Plugin: pdfimport
Plugin: photo_geotagging
Plugin: plastic_laf (29435)
Plugin: print
Plugin: proj4j (29435)
Plugin: reltoolbox
Plugin: reverter
Plugin: scripting
Plugin: tag2link
Plugin: tageditor
Plugin: tagging-preset-tester
Plugin: terracer
Plugin: turnlanes
Plugin: turnrestrictions
Plugin: utilsplugin2
Plugin: walkingpapers
Plugin: waypoint_search
Plugin: wikipedia
Plugin: wms-turbo-challenge2

java.lang.IllegalArgumentException: offset out of bounds
	at sun.util.locale.provider.RuleBasedBreakIterator.checkOffset(RuleBasedBreakIterator.java:759)
	at sun.util.locale.provider.RuleBasedBreakIterator.preceding(RuleBasedBreakIterator.java:819)
	at javax.swing.text.GlyphView.getBreakSpot(GlyphView.java:799)
	at javax.swing.text.GlyphView.getBreakWeight(GlyphView.java:724)
	at javax.swing.text.html.InlineView.getBreakWeight(InlineView.java:150)
	at javax.swing.text.FlowView$LogicalView.getPreferredSpan(FlowView.java:733)
	at javax.swing.text.FlowView.calculateMinorAxisRequirements(FlowView.java:233)
	at javax.swing.text.ParagraphView.calculateMinorAxisRequirements(ParagraphView.java:724)
	at javax.swing.text.html.ParagraphView.calculateMinorAxisRequirements(ParagraphView.java:157)
	at javax.swing.text.BoxView.checkRequests(BoxView.java:935)
	at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:568)
	at javax.swing.text.html.ParagraphView.getMinimumSpan(ParagraphView.java:270)
	at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:903)
	at javax.swing.text.html.BlockView.calculateMinorAxisRequirements(BlockView.java:146)
	at javax.swing.text.BoxView.checkRequests(BoxView.java:935)
	at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:568)
	at javax.swing.text.html.BlockView.getMinimumSpan(BlockView.java:378)
	at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:903)
	at javax.swing.text.html.BlockView.calculateMinorAxisRequirements(BlockView.java:146)
	at javax.swing.text.BoxView.checkRequests(BoxView.java:935)
	at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:568)
	at javax.swing.text.html.BlockView.getMinimumSpan(BlockView.java:378)
	at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:903)
	at javax.swing.text.html.BlockView.calculateMinorAxisRequirements(BlockView.java:146)
	at javax.swing.text.BoxView.checkRequests(BoxView.java:935)
	at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:568)
	at javax.swing.text.html.BlockView.getMinimumSpan(BlockView.java:378)
	at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:903)
	at javax.swing.text.html.BlockView.calculateMinorAxisRequirements(BlockView.java:146)
	at javax.swing.text.BoxView.checkRequests(BoxView.java:935)
	at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:568)
	at javax.swing.text.html.BlockView.getMinimumSpan(BlockView.java:378)
	at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:903)
	at javax.swing.text.html.BlockView.calculateMinorAxisRequirements(BlockView.java:146)
	at javax.swing.text.BoxView.checkRequests(BoxView.java:935)
	at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:568)
	at javax.swing.text.html.BlockView.getMinimumSpan(BlockView.java:378)
	at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:903)
	at javax.swing.text.html.BlockView.calculateMinorAxisRequirements(BlockView.java:146)
	at javax.swing.text.BoxView.checkRequests(BoxView.java:935)
	at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:568)
	at javax.swing.text.html.BlockView.getMinimumSpan(BlockView.java:378)
	at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:903)
	at javax.swing.text.html.BlockView.calculateMinorAxisRequirements(BlockView.java:146)
	at javax.swing.text.BoxView.checkRequests(BoxView.java:935)
	at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:568)
	at javax.swing.text.html.BlockView.getMinimumSpan(BlockView.java:378)
	at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:903)
	at javax.swing.text.html.BlockView.calculateMinorAxisRequirements(BlockView.java:146)
	at javax.swing.text.BoxView.checkRequests(BoxView.java:935)
	at javax.swing.text.BoxView.setSpanOnAxis(BoxView.java:343)
	at javax.swing.text.BoxView.layout(BoxView.java:708)
	at javax.swing.text.BoxView.setSize(BoxView.java:397)
	at javax.swing.plaf.basic.BasicTextUI$RootView.setSize(BasicTextUI.java:1714)
	at javax.swing.plaf.basic.BasicTextUI.getPreferredSize(BasicTextUI.java:917)
	at javax.swing.JComponent.getPreferredSize(JComponent.java:1660)
	at javax.swing.JEditorPane.getPreferredSize(JEditorPane.java:1332)
	at javax.swing.ScrollPaneLayout.layoutContainer(ScrollPaneLayout.java:791)
	at java.awt.Container.layout(Container.java:1503)
	at java.awt.Container.doLayout(Container.java:1492)
	at java.awt.Container.validateTree(Container.java:1688)
...<snip>...

[Don-vip]

Java bug. Nothing we can do here. You should stick to a stable Java version instead of running the beta version of Java 8.