EDT violation detected

[naoliv]

I am seeing this in the console while running the reverter plugin:

EDT violation detected
javax.swing.JPanel[,0,0,0x0,invalid,layout=java.awt.FlowLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=9,maximumSize=,minimumSize=,preferredSize=]
	at java.lang.Thread.getStackTrace(Thread.java:1589)
	at org.jdesktop.swinghelper.debug.CheckThreadViolationRepaintManager.checkThreadViolations(CheckThreadViolationRepaintManager.java:81)
	at org.jdesktop.swinghelper.debug.CheckThreadViolationRepaintManager.addDirtyRegion(CheckThreadViolationRepaintManager.java:72)
	at javax.swing.JComponent.repaint(JComponent.java:4796)
	at java.awt.Component.repaint(Component.java:3297)
	at javax.swing.JComponent.setFont(JComponent.java:2746)
	at javax.swing.LookAndFeel.installColorsAndFont(LookAndFeel.java:208)
	at javax.swing.plaf.basic.BasicPanelUI.installDefaults(BasicPanelUI.java:66)
	at javax.swing.plaf.basic.BasicPanelUI.installUI(BasicPanelUI.java:56)
	at javax.swing.JComponent.setUI(JComponent.java:656)
	at javax.swing.JPanel.setUI(JPanel.java:153)
	at javax.swing.JPanel.updateUI(JPanel.java:126)
	at javax.swing.JPanel.<init>(JPanel.java:86)
	at javax.swing.JPanel.<init>(JPanel.java:109)
	at javax.swing.JPanel.<init>(JPanel.java:117)
	at javax.swing.plaf.basic.BasicOptionPaneUI.createMessageArea(BasicOptionPaneUI.java:289)
	at javax.swing.plaf.basic.BasicOptionPaneUI.installComponents(BasicOptionPaneUI.java:172)
	at javax.swing.plaf.basic.BasicOptionPaneUI.installUI(BasicOptionPaneUI.java:141)
	at javax.swing.JComponent.setUI(JComponent.java:656)
	at javax.swing.JOptionPane.setUI(JOptionPane.java:1861)
	at javax.swing.JOptionPane.updateUI(JOptionPane.java:1883)
	at javax.swing.JOptionPane.<init>(JOptionPane.java:1846)
	at javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:858)
	at javax.swing.JOptionPane.showConfirmDialog(JOptionPane.java:796)
	at javax.swing.JOptionPane.showConfirmDialog(JOptionPane.java:758)
	at javax.swing.JOptionPane.showConfirmDialog(JOptionPane.java:719)
	at reverter.RevertChangesetTask.checkAndDownloadMissing(RevertChangesetTask.java:48)
	at reverter.RevertChangesetTask.realRun(RevertChangesetTask.java:92)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:93)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:161)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)

I am unsure if it's a problem in reverter, JOSM, java or something else (thus sorry that I am leaving it reported against Core)

JOSM

Build-Date: 2015-09-10 21:31:06
Revision: 8747
Is-Local-Build: true

Identification: JOSM/1.5 (8747 SVN pt_BR) Linux Debian GNU/Linux unstable (sid)
Memory Usage: 911 MB / 5461 MB (622 MB allocated, but free)
Java version: 1.7.0_85, Oracle Corporation, OpenJDK 64-Bit Server VM
Java package: openjdk-7-jre:amd64-7u85-2.6.1-3
VM arguments: [-Dawt.useSystemAAFontSettings=on, -Dsun.java2d.opengl=true]
Dataset consistency test: No problems found

Plugins:
- AddrInterpolation (31241)
- Create_grid_of_ways (31241)
- FastDraw (31265)
- FixAddresses (31241)
- OpeningHoursEditor (31241)
- PicLayer (31241)
- SimplifyArea (31241)
- buildings_tools (31361)
- download_along (31241)
- editgpx (31241)
- geotools (31126)
- graphview (31241)
- jts (31126)
- measurement (31289)
- merge-overlap (31241)
- opendata (31241)
- pdfimport (31241)
- poly (31241)
- reverter (31241)
- tagging-preset-tester (31241)
- todo (29154)
- turnrestrictions (31241)
- undelete (31241)
- utilsplugin2 (31463)

[simon04]

[o31594], [o31595].