kdenlive 22.04 - appimage: bug(s) with icons?

Hello dear developers,

I am a user of Debian 11, with lxde.

After starting it I realised that kdenlive appimage 22.04 doesn't display any icons neither in the main window nor in the menus (only text appeared).

After removing kdenlive-appimagerc, restarting kdenlive 22.04 recreated a new kdenlive-appimagerc, however, if some icons appeared, even then, many others were still missing, and again others were confusing, because there appeared only the kdenlive symbol in tiny form.

That is what kdenlive-22.04.0-2-x86_64.appimage now displays:

Whereas this was what kdenlive-21.12.2-x86_64.appimage displayed:

I also downloaded kdenlive-22.04.1-x86_x64.AppImage. It is just the same problem

If you need more information, let me know.

Thanks for your work on this great programme.

Ludo