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Happened during normal work with the IDE - several files open in editor, switching between them... See the attached thread dump.
Created attachment 16175 [details] Thread Dump
BTW, besides switching between editor tabs I was also closing some of them.
*** Issue 45252 has been marked as a duplicate of this issue. ***
The blocking is caused by NavigationView. Should be fixed along with rewriting navigation view to use JMI instead of the source hierarchy.
*** Issue 46341 has been marked as a duplicate of this issue. ***
Fixed in consequence of the NavigationView rewrite. See issue #44661.
This issus is no longer relevant, marking as verified.
Reorganization of java component