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?

  • angel@sopuli.xyz
    4·
    10 hours ago

    I have the same issue since one or two months, I’m on Firefox Nightly 142.0a1 currently.

    For me it looks like this:

    Firefox on the left, Dolphin (which uses the system titlebar control buttons) on the right.

    A few months ago, firefox also used the system titlebar control buttons. When I noticed the change at first, I also searched for solution online and in about:config, but didn’t find anything. All other solutions posted here sadly don’t work:

    • browser.tabs.inTitlebar only adds a standalone titlebar, like you noted.
    • When searching for non-native in about:config, I don’t see any titlebar buttons option that I can turn off.
    • Vertical Tabs are already disabled for me in the settings.

    If anyone finds a solution to this, I would be happy to be notified. Thanks in advance!