Firefox seemingly very recently shipped their own titlebar controls buttons, which worsens even further the lackluster OS integration. In the screenshot you see my regular control buttons on the window to the left (default KDE Plasma theme) and the new custom buttons Firefox is serving now.
Would anyone know how to undo that change in about:config or anywhere else?
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I vaguely remember having that on a new user account that I created for a demo.
I think what I did back then was to go to
about config
and setbrowser.tabs.drawInTitlebar
to0
For anyone interested. I got this information from a comment in a crosspost:
This behavior seems to be intended and won’t get fixed