EDT violation

[GerdP]

What steps will reproduce the problem?

1. Set preference debug.checkDeleteReferenced to false
2. use reverter to revert CS 47770943 (should end with 226 conflicts)
3. search for "type:way deleted" with checkbox "all objects" activated, this should show 3 ways in the selection list
4. Alt+Shift+U to undelete these ways to a new layer: w120591203 w486727370 w107997507
5. Click OK

What is the expected result?

new layer with 3 ways

What happens instead?

JOSM seems to hang, console shows

EDT violation detected
javax.swing.JMenu$1[,0,0,0x0,invalid,disabled,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.basic.BasicBorders$MarginBorder@5886ed8b,flags=384,maximumSize=,minimumSize=,preferredSize=,defaultIcon=javax.swing.ImageIcon@222ee35d,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=0,left=0,bottom=0,right=0],paintBorder=false,paintFocus=false,pressedIcon=,rolloverEnabled=false,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=Zoom to conflict]
	at java.lang.Thread.getStackTrace(Thread.java:1559)
	at org.jdesktop.swinghelper.debug.CheckThreadViolationRepaintManager.checkThreadViolations(CheckThreadViolationRepaintManager.java:70)
	at org.jdesktop.swinghelper.debug.CheckThreadViolationRepaintManager.addDirtyRegion(CheckThreadViolationRepaintManager.java:61)
	at javax.swing.JComponent.repaint(JComponent.java:4793)
	at java.awt.Component.repaint(Component.java:3311)
	at javax.swing.JComponent.setEnabled(JComponent.java:2683)
	at javax.swing.AbstractButton.setEnabled(AbstractButton.java:2091)
	at javax.swing.JMenuItem.setEnabled(JMenuItem.java:312)
	at javax.swing.AbstractAction.setEnabledFromAction(AbstractAction.java:102)
	at javax.swing.AbstractButton.actionPropertyChanged(AbstractButton.java:1218)
	at javax.swing.JMenuItem.actionPropertyChanged(JMenuItem.java:411)
	at javax.swing.AbstractButton$ButtonActionPropertyChangeListener.actionPropertyChanged(AbstractButton.java:1364)
	at javax.swing.AbstractButton$ButtonActionPropertyChangeListener.actionPropertyChanged(AbstractButton.java:1352)
	at javax.swing.ActionPropertyChangeListener.propertyChange(ActionPropertyChangeListener.java:88)
	at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
	at javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(SwingPropertyChangeSupport.java:92)
	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
	at javax.swing.AbstractAction.firePropertyChange(AbstractAction.java:276)
	at javax.swing.AbstractAction.setEnabled(AbstractAction.java:236)
	at org.openstreetmap.josm.actions.AutoScaleAction.updateEnabledState(AutoScaleAction.java:441)
	at org.openstreetmap.josm.actions.AutoScaleAction$MapFrameAdapter.lambda$0(AutoScaleAction.java:496)
	at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:184)
	at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:164)
	at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:211)
	at javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:405)
	at javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:415)
	at javax.swing.DefaultListSelectionModel.removeSelectionIntervalImpl(DefaultListSelectionModel.java:576)
	at javax.swing.DefaultListSelectionModel.clearSelection(DefaultListSelectionModel.java:420)
	at javax.swing.JList.clearSelection(JList.java:2049)
	at org.openstreetmap.josm.gui.dialogs.ConflictDialog.selectionChanged(ConflictDialog.java:332)
	at org.openstreetmap.josm.data.osm.DataSet.lambda$5(DataSet.java:684)
	at org.openstreetmap.josm.tools.ListenerList.fireEvent(ListenerList.java:150)
	at org.openstreetmap.josm.data.osm.DataSet.doSelectionChange(DataSet.java:684)
	at org.openstreetmap.josm.data.osm.DataSet.setSelected(DataSet.java:615)
	at org.openstreetmap.josm.data.osm.DataSet.setSelected(DataSet.java:606)
	at org.openstreetmap.josm.plugins.undelete.UndeleteAction$Worker.run(UndeleteAction.java:208)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

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

I think I already found a fix.

Build-Date:2019-03-12 08:41:54
Revision:14880
Is-Local-Build:true

Identification: JOSM/1.5 (14880 SVN en) Windows 10 64-Bit
OS Build number: Windows 10 Home 1803 (17134)
Memory Usage: 576 MB / 1753 MB (329 MB allocated, but free)
Java version: 1.8.0_191-b12, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080
VM arguments: [-agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:59890, -ea, -Dfile.encoding=UTF-8]
Program arguments: [--debug]
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (34867)
+ apache-commons (34506)
+ buildings_tools (34904)
+ continuosDownload (82)
+ download_along (34869)
+ ejml (34389)
+ geotools (34513)
+ jaxb (34678)
+ jts (34524)
+ o5m (34867)
+ opendata (34911)
+ pbf (34867)
+ poly (34867)
+ reltoolbox (34867)
+ reverter (34917)
+ undelete (34883)
+ utilsplugin2 (34915)

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.

[GerdP]

(hopefully) fixed with [o34919:34920]