[ORIGINAL 1 Star]Working adequately until today. Now Firefox 88 on Windows 10 will not load with this plugin enabled.[/]
Firefox updated to 89, so I enabled M-A Containers once more and the plugin seems to be working fine again.

I want to manually add websites, because it can be annoying to get to the website sometimes. But overall good extension.

Je ne sais pas comment je pourrais faire SANS

Due to very limited container management functionality, the add-on is almost unusable on many modern sites like Microsoft, AliExpress, eBay etc.

It is known that many sites use redirections to other [sub]domains to perform a login, to transfer the user to a payment service etc. The redirection may be performed several times, so the add-on may be unable to ask the user to establish domain-to-container correspondence. In such cases, the only way to successfully work with the site, is to remove it from the containers, and use only alone.

The solution is trivial: just to allow the user to enter/edit domain name manually, with wildcard (*) support. This would solve most problems described above. I asked about such feature some time ago, but the request was ignored.

Fantastic. The only reason I continue to use firefox.

Version 7.3.0 On MacOS missing hide/show container functionality. I joined a discuss/question on the matter with support. For me, this is very valuable functionality. I will gladly upgrade rating once resolved.

EDIT: Thank you for the Developer response. The "## >" on the right of each container is a Button that takes you to more options, which include "Hide"

The only thing missing for a 5 star, personally, would be the ability to set the order of the sorting of tabs