Crash on exit

[RazielZnot]

This happens pretty often with the latest dev build and less often with the stable one. It's unpredictable when it will happen and the cause is not clear except if I run the editor with a different game profile than the last time the crash happens more often. The system log points at qwindows.dll without much info other than the error code 0xc0000005 and the offset 0x0000000000012ca0 and there is nothing abnormal in the radiant.log.

[Garux]

This is hard to debug w/o consistency and reproducibility, from googling it's not necessarily application error even.
Somewhat starting point would be getting stack trace.