At last. More of this please, Mozilla...

One of the most annoying versions of this bug is when launching a full screen game, the mouse gets re-positioned and triggers a tooltip, which is on top of the game, and the game doesn't like alt-tabbing when you unfocus it to go deal with Firefox, so you just have to restart it...

I'm still waiting for to fix basic container tab behaviour [1]. I can't help but think that their product management is completely broken.

[1] https://bugzilla.mozilla.org/show_bug.cgi?id=1479858

There's countless people who have screamed that they want to switch from chrome, but can't because profiles don't work the way we want them too. And it's two seemingly small changes that need to happen too.

1. Make the UI around profiles better 2. When I click a link anywhere outside of the browser, open it in the last active window.

Number 2 is the most important honestly

I'm using Firefox on Linux and 2 is how it's been working for me for a looong time now. Clicked links in external programs always open in the last active Firefox window for me. Is this OS or even window-manager specific?
Are you using different profiles ? I have two running at the same time, links always open in the browser instance running the "default" profile, not the other one.
I got tired of dealing with it and just told my system that URLs should be opened by a script I wrote that just puts the URL in the clipboard and shows a notification that it did so. So I open/click a link, then go find the window I want it to open in and paste and go.
If you want to avoid that, but have control of where urls are opened (and use a mac);

https://github.com/johnste/finicky