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fresh build, linux, 1.6.0-rc-b104 At least seems so. See the attached thread dump. It happens to me few times in last days (with fresh build each day) when I copy-pasting whole package from one project to another. IDE itself is not frozen but it is not possible to do any action in the Project tabs view until restart. Hopefully dump will help.
Created attachment 36547 [details] deadlock.txt
The same reason as #90009. *** This issue has been marked as a duplicate of 90009 ***