Replace in Path GUI hangs

Replicate:

1. Fill in search/replace (no options selected)
2. In one of the files try to manually make a change that will trigger auto-complete
3. Being non-the-wiser, press `Enter` to accept the change and continue typing (this will start the replace)
4. Panic and try to go back by pressing skip, closing the "drawer tab" for replace, canceling the change

Expected: Return to the path window and try to autocomplete whatever you were typing

Actual: Window `Replace in Path` hangs - and neither escape can close it (Solution: close (by pressing X) and reopen project - or IDEA if it's your only project). Note that the main GUI is otherwise fully responsive