Created attachment 140950 [details] Displaying canvas fails when went loading existing frame SUMMARY Marked as OpenGL, but also related to Animation. OpenGL fails on kubuntu 20.04 when displayed frame is changed, and other existing frame needs to get loaded. You can create new frames and draw on them, but going back to any of them causes the whole screen to go black (screenshot attached). The data is still there, and is displayed properly in the layers docker, but the only way to fix displaying the canvas is to reopen a document. Bug is Linux, or KDE Plasma specific - I confirmed it works well on Windows 10. STEPS TO REPRODUCE 1. Create a new animation document 2. Paint two frames in one layer 3. Go back to the first frame OBSERVED RESULT Black canvas as shown in screenshot SOFTWARE/OS VERSIONS Operating System: Kubuntu 20.04 KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.68.0 Qt Version: 5.12.8 Kernel Version: 5.4.0-81-generic OS Type: 64-bit Processors: 16 × AMD Ryzen 7 2700 Eight-Core Processor Memory: 31,4 GiB
Does this also happen with the appimage? With the appimage, on KDE Neon, I cannot reproduce this.
After more testing: this is caused by some of my settings - removing kritarc fixed the issue. So far I couldn't find a setting that caused it - it's not any obvious 'Display' setting, and may as well result from some add-on that left its trace in kritarc. Should I close the report as "not a bug"?
Yes, I don't think we'll be able to find the root cause.