Created attachment 126646 [details] desktop video showing selection corruption. SUMMARY STEPS TO REPRODUCE 1. Create a suitable large image in 32bit float format 2. do some drawing and select some stuff 3. after a while you'll notice corruption in the way that the selections are displayed, looks a bit like a memory leak or over flow causing the selection to become corrupt... see attached video. I've had layers fail to render ontop of one another properly too when working with large file, will try to reproduce. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
*** This bug has been marked as a duplicate of bug 413220 ***