Firefox tabs do shrink. Then, once they get to a width where shrinking any more would start negatively impacting the ability to use the UI, they start to scroll. Until you reach this point, the tab scrolling UI is hidden, so there's no concern for anyone who doesn't use tabs heavily.
> Until you reach this point, the tab scrolling UI is hidden, so there's no concern for anyone who doesn't use tabs heavily.
Which is me. :-)
We're also experimenting with making it configurable. You can ratchet down `browser.tabs.tabMinWidth` in `about:config` to pack more tabs in per window.
This has been added back? That'd be awesome news.
It existed once, but was removed because of "complexity" and since then the recommended solution was editing userChrome.css manually (or using an extension that did so, but that of course doesn't work in 57+). Still haven't quite tied down what the CSS has to be in recent versions.
Here's the bug from back then https://bugzilla.mozilla.org/show_bug.cgi?id=574654 (yes, I'm still salty about the attitude in there)
I don't want it. I don't like Firefox's approach, I much prefer the shrinking tabs paradigm.