I’m on Arch Linux and use Firefox. I just upgraded to version 120 and what happened is that If I open a tab the whole tab indicator suddenly takes the full width of the title bar so I can’t really grab the window and move it anymore.
In previous versions the tab would have a max width so there would be some space on the right to grab it. This also makes the close button to be all the way on the right. Is there any way to get it back as it was?
That ain’t normal. You can certainly customize Firefox to behave that way with custom userChrome.css file, but you would have to do that on purpose.
I suppose it’s also possible that if Firefox is installed via your package manager then they might do some customization to it. I’ve seen some linux distros package these sorts of custom Firefox builds that apply various changes to official Mozilla builds.