as seen https://support.mozilla.org/en-US/questions/1233468 Managing container still isn't easy. You can reopen a tab in a "no container" by clicking ON the tab itself but this option isn't available in the "always open this site in" There NO option to move the "X coloc" tab to a "no" container. For site that open new tab it doesn't open new tab in the same container Exemple : Spotify i managing 2 account (one for me, one for the kids). I chose to alway open it in the "green" container, but as i try to login with Gmail while in the green, it open in a new "no container" tab instead of opening in a "green one". Worst i can see it going from green to orange no black. So, only way to really do it for not : "X coloc tab" an use a private browsing