TC5 with Firefox in wrong locale

[Zendrael]

Hello all!

I'm running Core 5.0.2 with firefox.tcz installed and loaded (repo version at the time of writing is 21) and even after installed my language pack (the add-on provided by mozilla) it is still in english... I'm also booting the system in my language so other apps (which had their locales) are ok; just Firefox is wrong.

Do I have to enable something more to get my language working?

Thanks in advance!

Edit: I had to install the "Quick locale Switcher" add-on to force the interface locale to my (already installed) locale. Maybe firefox would require separate locale packages (tcz)?