Tor-browser icon and name in alt-tab and other places when running can become Firefox's right after a self-update
Tor-browser is installed through https://aur.archlinux.org/packages/tor-browser and on my last usage it downloaded the 12.0.2 through the self-update mechanism.
On the next launch, it updated itself before launching it, and the icon and name in alt-tab for example became Firefox's. A restart of the browser later and it was back to the normal Tor Browser icon and name, so this seems to be a bug arising only for a post-update launch.
Even right after an update, this should correctly use Tor-browser's icon and name (If I remember correctly, the name associated to the icon also was Firefox)
Edited by Porkepix