I run into this very often, also on Mac / with as many cursive versions as I can remember. It is quite a pain point. Would be happy to try and reproduce / collect more information if helpful.

When the UI deadlocks, IntelliJ should produce automatic thread dumps (see https://intellij-support.jetbrains.com/hc/en-us/articles/206544899-Getting-a-thread-dump-when-IDE-hangs-and-doesn-t-respond). If one of you could send me some of them I’ll take a look. Probably <mailto:[email protected]|[email protected]> is best.

Thanks Colin - I sent a thread dump to that email.

I’ll send one too in a moment--thanks for reminding me

I was wrong, the ui can freeze before the tests finish running.

threadumps sent; thanks in advance!

BTW I tried with edits that do not involve newlines (so line numbers don’t change) and it didn’t freeze. But even the simplest newline insertion (between two top-level forms) froze nearly immediately. So that is perhaps a clue.

Thanks for that, I’ll take a look at both. It seems like this might be https://github.com/cursive-ide/cursive/issues/2752.

Thanks for those dumps. I believe I can see the cause of the problem, I think it’s not taking the appropriate read lock before performing the search for the element in the AST relating to the test result. This seems to cause a deadlock, but it must be sporadically since I’ve never seen it myself. However, I’m pretty sure I know what the fix is.

Actually, I spoke too quickly - I actually am taking the appropriate lock. I’ll continue investigating.