So close yet so far.
If I go to https://mayflowermadame.bandcamp.com/ and select "always open this site in...", and I then open https://vandrer.bandcamp.com/ having not visited it before, it doesn't open the site in my Bandcamp container.
If I go to https://mayflowermadame.bandcamp.com/ and select "always open this site in...", and I then open https://vandrer.bandcamp.com/ having not visited it before, it doesn't open the site in my Bandcamp container.
Follow along for the root domain issue here: https://github.com/mozilla/multi-account-containers/issues/1...