On the one hand yes that's great. On the other hand it's not an exaggeration to say that a decade ago would have been too late for this feature.

I don't know if this is a good thing or a bad thing, but it was only added to Mac fairly recently too, maybe around a year ago. And for a while it was behind an about:config setting as well.

This doesn't work for me; found something that seems to suggest it's gated behind an about:config option and only works on Wayland anyway[0]. Oh well.

[0] https://www.linuxadictos.com/en/firefox-88-will-activate-the...

They're not treating X11 as first class citizen because it's a insecure history compared to Wayland.

Unfortunately they still don't provide a PPA for their developer build, so I have to update it manually which is extremely annoying.

edit: I gotta say, why the fuck would someone downvote this comment?

Manually? I downloaded their .tar.gz, have unpacked it in a location my user can write to, and rely on the built-in auto-update mechanism. Works fine.

PPAs are specific to one commercial distribution. Shouldn't they offer a flatpak or something similarly cross distro?