Fix empty dialogs on Linux (ref. #616 #642) #776
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There are similar issues as #616 for Alt-M etc. This PR fixes them at once.
They are very annoying as the empty dialog holds the focus and prevents any window operations. I need to hit Ctrl-Alt-F2 and type a kill command on a virtual console to escape from the trap.
To developers:
Please use
LizzieDialoginstead ofJDialogto avoid the suspicious behavior ofsetType(Type.POPUP)on Linux.