This looks like a theme issue to me. Do you use a custom theme for GNOME? qBittorrent is Qt and GNOME is known for f**ing up Qt apps.
Using the flatpak may help, but is a bad workaround.
GNOME is annoying with that, but can you send this?
cat /usr/share/applications/qbittorrent.desktop
(Not sure how it is called)
There might be a problem with the desktop entry having a weird Exec= line