How to undo Firefox changes to the titlebar controls buttons? (lemmy.ml)

submitted 7 months ago by ISOmorph@feddit.org to c/firefox@lemmy.ml

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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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[-] je_skirata@lemmy.today 3 points 7 months ago

Right click on the toolbar and click "Customize Toolbar" and in the bottom left there should be a tick box to turn it back to normal

[-] ISOmorph@feddit.org 1 points 7 months ago

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.

[-] je_skirata@lemmy.today 2 points 7 months ago

That's the only way I know of, good luck finding a solution for you

[+] that_leaflet@lemmy.world 3 points 7 months ago* (last edited 4 months ago)

[deleted]

[-] ISOmorph@feddit.org 2 points 7 months ago

Yup, does that break something in the newest update?

[+] that_leaflet@lemmy.world 7 points 7 months ago* (last edited 4 months ago)

[deleted]

[-] ISOmorph@feddit.org 2 points 7 months ago

I'm surprised all other GTK apps manage to use the plasma theme defaults. But it gives me enough to do some more research. Thank you very much!

[-] Valso@lemmy.ml 1 points 7 months ago

Plasma has a not so bad GTK integration which allows GTK apps to use plasma defaults. Also, GTK apps that weren't written by Gnome also have some good integration with other desktops. Only those written by Gnome are hardcoded to use only GTK styles.

[-] Valso@lemmy.ml 1 points 7 months ago* (last edited 7 months ago)

If Firefox is using GTK (GTK3 to be precise) to decorate the window, even in KDE, that might be some good news for him, altough I could be wrong bc I've never used Plasma for this long (30 days tops, long ago) to get to the point of wanting to change the title bar of anything. In Cinnamon (6.4.7) I'm using an old workaround for cases like this. It's still somewhat maintained. I can't guarantee it will work with Plasma but it doesn't hurt to try: https://aur.archlinux.org/packages/gtk3-nocsd-git After installation, open (or create) ~/.XSession and put these two lines in it: export GTK_CSD=0 export LD_PRELOAD=/usr/lib/libgtk3-nocsd.so.0 and reboot.

This is how I've been replacing GEdit's CSD with a normal title bar, as well as Firefox's:

[-] angel@sopuli.xyz 2 points 7 months ago

This works, but it's the same as disabling browser.tabs.inTitlebar. The result is a separate titlebar above the tab bar.

[-] Valso@lemmy.ml 1 points 7 months ago

Yes, but IDK of any other way to change the buttons ISOmorph was asking about. The only other way is to find and change/remove them in FF source code and recompile which needs a supercomputer to do, otherwise it may take days to recompile. I assume he doesn't want to waste days on recompiling, so that's one way to change things. With GTK3-NOCSD (mostly + some other customizations) my title bar always looks the same way, no matter what changes Mozilla make to it:

[-] HouseWolf@pawb.social 1 points 7 months ago

Are you using any CSS tweaks? I just had a similar issue using Lepton. But rather than moving my menu buttons it just made them vanish all together...

[-] ISOmorph@feddit.org 1 points 7 months ago

I got the answer in a crosspost I did: https://bugzilla.mozilla.org/show_bug.cgi?id=1967099

It was reported as bug but got confirmed as intended behavior. Nothing anyone can do short of editing the system icon theme

[-] heftig@beehaw.org 1 points 6 months ago

I guess this is really a bug in KDE/Plasma's themes, then? The window controls in the GTK3 theme should have the same look as the window controls in the icon theme.

this post was submitted on 29 Jun 2025

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