Created attachment 140379 [details] kdenlive with the described bug SUMMARY Fade in/Out effects result in messed up colors STEPS TO REPRODUCE 1. Drag a clip to the timeline 2. apply the fade in or fade out effect OBSERVED RESULT Green/pink distorted picture with lines EXPECTED RESULT transition from/to dark SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: 5.22 (available in About System) KDE Plasma Version: 5.22.4 KDE Frameworks Version: 5.84.0 Qt Version: 5.15.3 ADDITIONAL INFORMATION
Thank you for reporting. The AppImage 20.08.0a solve this problem. Nightly build after 25-Aug-2021 shouldn't have this issue.