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Yes — We added it last month! (Mozilla Containers dev here.) See this blog post for more info: https://blog.mozilla.org/security/2020/02/06/multi-account-conta

• 725686 7y ago
  Sorry to bomb you like this, but I don't have the time/energy to find where to file a ff container bug: twitter.com never opens in it's designated container for me. That is the only site I always have to "Reopen in container".
  • extra88 7y ago
    Works for me, maybe the issue is specific to the site linking to Twitter.
  • girzel 7y ago
    Same here: that's the only site that doesn't work. I wonder if it has something to do with the post-login redirects: it's impossible to say "always open this site in this container", because you've already been redirected to a different url.