This extension is all I needed.
Major issue I faced is it fails to open the specific bookmarks in the designated containers.
Other is opening tab by keyboard shortcut is limited to only ten containers. If there is a functionality to increase that then this addon would be great.

good for getting around jerk moderators who block you cuz you don't give the same opinions they have sites like:city-data and other jerk run sites run by morons. Have to keep checking allow permissions to delete container data. Easy to make a mistake and send in non-container if you're not careful. Mozilla wants you to add their VPN to the containers but their VPN gets such poor reviews no need. slow to load up.

Cannot use the containers without giving a rating so you get one star. Nagging is a shitty tactic.
Edit: A review is not enough. Are you actually forcing people to post on facebook and twitter to gain access to this extension?

works well, no problems so far, good isolation

Super useful extension. Enough for me to switch to Firefox.

I shouldn't have to rate, share, or otherwise promote an official Firefox extension just to be able to use it. Make sure this "feature" gets removed soon so I don't develop a competitor. 📎

Good functionality, but what's the deal with having to review...?

Why does this junk app keep asking me to review it?

This is very essential basic browser functionality which Mozilla have decided to lock behind a bunch of annoying nags and product promotions. Would be much better if it would just let me use the extension without wasting my time, and also if this functionality was integrated into Firefox.

Great idea, but buggy when used for youtube and somewhat with google and gmail. Also some lesser problems with facebook and instagram. All these problems relate to trying to have different accounts in different containers. I caused me to come back to Mozilla Firefox. Please

Good extension, but UX is broken.

the "Open this site in your assigned Container?" page should really allow me to choose which container, rather than having "Current" and "last" container.
its just a bit awkward to use as a developer, when you need to spin up multiple containers quickly