The fact that tabs and links spring open in the *default* container rather than the active one you're currently working with, very nearly makes this unusable for me. I'm still deciding whether I should persevere with it...

I've installed 'new container tab' addon, but it still means that the standard keyboard shortcut, CTRL+T, that of course everyone is used to and which you're still bound to hit by instinct, makes it suddenly hide the container you're working in- ie. all your other open tabs- and show the new tab by itself. Now, that's BEYOND annoying and I'm really not sure it's something I can accept I'm afraid.

The issue is referenced here: https://github.com/mozilla/multi-account-containers/issues/462

EDIT: Downgraded to one star after puerile response from the developer. I've re-read what I wrote and stand-by everything there. It doesn't seem overly rude, it was meant as, and clearly is, constructive criticism to help others decide whether to install this addon. Grow up.