Interesting, I accomplish this just fine and it's my primary use for containers in Firefox. I don't know what your workflow is like, but I just click the "+" ta

Interesting, I accomplish this just fine and it's my primary use for containers in Firefox. I don't know what your workflow is like, but I just click the "+" tab button, select one of the other containers I want, and a new tab opens in that container. Type address of website and continue as normal.