I’m using Firefox-beta v.125 on Manjaro-KDE, I use the code from here: window_control_force_linux_system_style.css but seems like don’t work right anymore, the system buttons appear overlapping the default, maybe that could be a temporal issue cause is beta version, I don’t know.
Indeed there is! I tested two Firefox simultaneously and copied rules from the wrong browser toolbox :p The new update should work fine now.
Awesome. Working perfectly now! Much appreciated!