I wanted to try this add-on and what it did was delete all my cookies upon installation without checking with me. It should have asked me first or at least given an undo button. It simply deleted all my 1000+ cookies. I thought it will delete the cookies which are created after it gets installed or at least after I open that website and close it again, but this pest just ruined everything.

До лампочки. Он даже не хочет поддерживать то, что есть в белом списке. Написано красиво, работает плохо.

К сожалению, не работает. Ни 56 версии, ни в предыдущей.

Every single site I visit, the plugin shows a red "X" indicating that it doesn't seem to be working at all. On Firefox 56.0, so I'm not sure if that's the issue or not, but I imagine not.

Using Mozilla official addon and cookies inside those tabs aren't touched. Please add support!

https://addons.mozilla.org/firefox/addon/multi-account-containers/?src=userprofile