Just works without any problems

It allows you to separate the information Microsoft, Google and Facebook, know about you and put them all on a need-to-know basis.

It's a killer functionality that makes Firefox worth using, just for this.

I love this, but When I accidental deactivate this I lost all of my container!

This is a headache. I can't remember my all containers now. Can you fix this?

Used it for multi-account use across AWS products and worked well to keep each account logged in separately and not overtake the previous account login. Still would be nice to group the tab containers together better as you can have the same tab container across multiple windows and rearranged.

I use different google accounts for YouTube and YouTube Music and keeping different container tabs for each site has saved me from the pain of having to toggle back and forth for each one

No way to see tabs in a single container. It helps to keep multiple accounts, but without being able to segregate it's even more difficult to handle tabs.

Enserió una de las principales razones por las que uso firefox, te permite tener todo separado pero a la vez en el mismo navegador y usando la misma cuenta

Не работает.

Missing more color (the user could add and remove colors) - the same for icons.