This addon is fantastic at what it does, however it has a fatal flaw... If you open up Firefox Nightly it's disabled and that's fine. When you go back to Firefox, all your containers are reset having the wrong names, colors, icons and and often a loss of data for some of the containers. It's really frustrating and I literally have to back up my profile every time I open nightly and restore it after finishing just to prevent this problem. PLEASE FIX THIS!!!!

I also have a suggestion to have a way to manage/review the data for each container. Possibly let us have history management for individual containers?? Especially options of whether to merge pages browsed with trunk history all the time as it is now, to have a separate history, or to not save history for each tab. It would be really fantastic to even be able to import/export the profile data for a container and choose which ones to include with Firefox Sync!!