My GTK Theme is already set to “Breeze”.

And my Firefox Theme is set to “System”.

Thanks though.

https://bugzilla.mozilla.org/show_bug.cgi?id=1967099

If @Frellwit is right, this seems to be intended and not a bug :(

My GTK Theme is already set to breeze:

Changing the value in about:config had no effect. Thanks anyway though!

Disabling vertical tabs didn’t help. But thanks for trying

Resolution: — → WONTFIX

ouch…

Thank you for replying, but that just adds a standalone titlebar with just a title and the controls, while moving all the other functions like the address input to a regular toolbar, as the options suggests. I’d like to keep all the functions and the titlebar controls in one single titlebar, but with the OS control buttons, as it used to be before the last Firefox update.

I’ve seen solutions with semi-integrated Raspberries to create multimedia and telephony capabilities. But everything that requires an interface to the car sensors is closed down and I’m unaware of any solutions to this.