https://bugzilla.redhat.com/show_bug.cgi?id=1061568
--- Comment #14 from Jens Petersen petersen@redhat.com --- (In reply to Jens Petersen from comment #12)
It's looking to me as if _JAVA_AWT_WM_NONREPARENTING=1 [is redundant] in [recent] Fedora releases?
Anyone able to test?