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For lots of information about this RANDOM DEADLOCK please see the issue #31913 The fix for #31913 was done, and thus it could be closed as FIXED we decided enter a new bug for the deadlock. CC'ing all people from th original issu
FYI: This deadlock can be reproduced any time with PVCS filesystem. Although I've warned that calling confirmed() method in AWT can lead to deadlock (see issue #31913, it's still called in AWT). There are more associated deadlocks (issue #37580 and issue #37596). I'm still thinking about a possible solution.
This deadlock was fixed by the fix of issue #37596. Now it is permitted to wait for a command in AWT thread. A modal dialog is created. The solution might not be optimal, but it resolves the problem.