Hi again, Following up on my previous test above: Because forcing QT_QPA_PLATFORM=wayland still resulted in Cinelerra running under XWayland (xlsclients confirmed cin), I decided to have a look at the internal contents of the AppImage (CinGG-qt6-20261001-x86_64.AppImage). After extracting the package (--appimage-extract), I ran a search for the Qt6 Wayland platform plugins (*wayland*.so). The search returned no matches, confirming that the Wayland QPA plugins are currently omitted from this build bundle. Because these plugins are missing from the package, Qt6 has no choice but to fall back to XWayland, even if the environment variable is explicitly set. Just wanted to share this finding in case it's helpful for possibly adjusting the build scripts/recipes for later releases! Terje