I had to close firefox to implement an about:config change, and I ended up having to right click the tabs bar and scrolling down to select "reopen closed tab" option like 15 times before realizing it wasn't reopening my container tabs, and then by chance i managed to find "reopen closed session" hidden in the history sub-menu (I think? i don't see the option there anymore) which opened my containers AND all the tabs i had individually manually reopened and now needed to close the duplicates of.
this menu needs to have a "restore previous session" and/or "reopen closed tabs" option that reopens all the tabs that were closed at once when a user closes the window to quit out of firefox WITH THE CONTAINERS INCLUDED IF I'M REOPENING TABS AND THE TABS CLOSED ARE IN A CONTAINER YOU NEED TO REOPEN THE CONTAINER, THIS IS BASIC FUNCTIONALITY. What I had to go through is so extremely stupid. didn't there used to be a "reopen closed tabs" option in this menu? I swear there was, why would you get rid of it??????