Two icons are generated

[gcascio]

As stated here two icons are generated.

[vladimiry]

The scope of the issue seems to be quite narrow, see details here electron-userland/electron-builder#3872 (comment).

If I got it right, the issue occurs because the new preload script is used (new script starts new process, etc and I guess that panel uses process path as mutex/unique identifier or the script keeps working in the background). Editing the original script instead will solve the issue but there might be other simpler solutions.

[gcascio]

@vladimiry thanks a lot for the helpful hint! Wish I could avoid un- and repacking the AppImage, I'll think about it but I'm afraid at the end I just have to accept it.