Created attachment 181137 [details] transform This seems to happen on random screens, I've seen it in the "Transform" and "Clip, Scale and Tilt" effects, and the add title clip screen.
Created attachment 181138 [details] add title
Do you experience this with the official packages AppImage or Flatpak or the package from Debian? This looks like the icons are not available/installed. Check if you've installed breeze icons.