Created attachment 159575 [details] Crash backtrace SUMMARY Krita crashed during thumbnail generation after some painting. This happened to me twice, though I don't have a reliable way to reproduce it. STEPS TO REPRODUCE 1. Paint on a paint layer inside a group layer that is above another paint layer 2. Lock the bottommost layer from the layers docker? (This is what I remember doing right before the crash.) OBSERVED RESULT The "waiting for image operation to complete" window pops up with something about thumbnail generation (don't remember the exact text) followed by Krita crashing. EXPECTED RESULT No crash. SOFTWARE/OS VERSIONS Windows: Win10 21H2 (19044.2965) Krita: krita-nightly-x64-5.2.0-prealpha-55965ad53a
Created attachment 159576 [details] Crash backtrace Sorry, that was the wrong backtrace. This is the right one.
*** This bug has been marked as a duplicate of bug 469945 ***