How is this a Recommended Extension?

Mozilla doesn't have to follow their own rules?

https://support.mozilla.org/en-US/kb/recommended-extensions-program

https://github.com/mozilla/multi-account-containers/issues/1768

https://github.com/mozilla/multi-account-containers/issues/1740

https://github.com/mozilla/multi-account-containers/issues/1691

https://github.com/mozilla/multi-account-containers/issues/572

This problem has existed for so long and apparently no one knows how to fix it.

And now you got the new Ui problem and new glitches, just check the recent reviews. So glad i knew not to update.

It went from being a good extension to something really bad, with just one update

Their latest update made this extension annoying to use. As others have said, now I have to click multiple times to open a new container. I will wait for a few weeks just to see if they read our reviews, but if they don't, I will uninstall it. A shame, because I truly liked this extension.

After latest update hundreds of temporary containers keep on showing up. I can delete them but they are back after a restart. Really crappy update!

don't know what they're doing, it was doing fine and they decided to change everything, we have to click at least 6 times to open a new tab. who came up with this new feature? that guy must be a genius, definitely deserves a raise, what more will he add? i'm excited for the next updates, i hope they add captchas next

deplorable

The latest update completely renders this extension useless. I can't just hit Control-Period and navigate up and down with my arrow keys to select the container I want. Please revert this change or allow switching back. At least make it possible to use the arrow keys to navigate.

Sehr umständlich. Einsortieren von offenen Tabs nicht möglich. Nicht praxisgerecht und kaum brauchbar!

Recommended because it's made by mozilla. Does not install, corrupt file error message. Why you recommend an addon that you have not tested?

It is 2020, still cannot sort the list created.

I get the message -
This add-on cannot be installed as it appears to be corrupt, after the add-on is downloaded.
Please fix it ASAP

update 5-4-20 I get it now they won't allow install from tor browser cuz they want to track all your logins using the so called private containers. BS Also Mozilla login here is a royal PITA maybe they don't want more reviews/
WHY IS IT RECOMMENDED? WILL NOT INSTALL: ERROR: FILE IS CORRUPTED

Just like Moz://FifthAxiom : this module is great "on paper" but it lacks a lot of options and default behaviours to be useful in an everyday situation.

You should be able to easily manage the list of sites (or wildcards) assigned to a container, this basic setting should avoid new tabs (if the domain name does not match) to be opened in the same container thus breaking the tracking.

Please improve this great promising tools.

"Keep parts of your life separated".

History isn't separated.

It seems great on the paper, but lot of websites are unable to load. This includes Faebook, Messenger Linkedin, Outlook mails, etc..

I couldn't live without this extension anymore!

When you assing site to container and tell it to always open in that container, site won't load on private browsing. It was working fine a couple of days again. Please fix it. Can't use Google when in private window.

It's a must have add-on. But it causes some serious problems with the copy-paste function throughout the system. As soon as I install this add-on and start using it my copy-paste function starts malfunctioning. I have to press Ctrl+C like 5 times to make sure that it would have worked at least once. It's very annoying to copy something and when you go to other place and press Ctrl+V, it turns out nothing was copied.
Now a days, it has starting causing problem with Whatsapp web as well. When I copy an image from clipboard directly into Whatsapp web, it shows a black image. But if I do the same using google chrome browser, where I don't have this add-on installed, it works fine. After months of headache, I have finally reached the conclusion that this add-on is the culprit.

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THIS WONT WORK (THE EASY WAY):
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Misleading quote: "Avoid leaving social-network footprints all over the web (for example, you could use a Container tab for signing in to a social network, and use a different tab for visiting online news sites, keeping your social identity separate from tracking scripts on news sites)."

You'll need to add an option to change its behavior. When opening a site in a container (e.g. Bing-search) - clicking a link - the new (unassigned) site will stay in the same container thus enabling tracking. Pretty useless this way. Although useful for using different profiles, it's not secure/private.

Options to add (user-decided behavior):
- Open new unassigned sites in the default container, a temporary container or current container (you can reassign later)
- Switch/assign (via toolbar button) the current site to different container (assign/move/copy to a new container for site)
- Changing to a new container will open a new tab or use the current tab (a new tab to avoid losing *cursing* history)
- Option to open web sites in their own containers without the user assigning a container (auto-created for TLD's) *
- Possibility to select a default container for a site assigned to multiple containers or use last container used
- Possibility to sort container labels
- Add an overview of which site/data is contained in which container
- Try to also use the omni-box for extra functions (assigned container switching) since the container-label is already there

* When reassigned by user the auto-created container is renamed or merged with an existing container

EDIT 1: Rating lowered from 2 to 1 star until problems are solved. Totally wrong implementation (the omni-box becoming useless and is imprisoned by this add-on). I get the idea but it's wrong. Visiting Facebook, then entering a different URL, will keep you in the Facebook container. Track-track-track. Just too much concentration and handling is needed to keep things real secure. For now this extension is just a kind of identity switcher within the same Firefox user-profile. Why not then just create an add-on to switch to another user-profile with a toolbar drop down-menu? At least that's clear and transparent. This surely isn't! For this to work properly you've to create a container for every URL/cluster of sites you visit. We need Firefox Web Clusters/Containers.

EDIT 2: Found out that sites are currently not even linked to containers (only cache/cookie data) which was not my assumption. It starts your selected container and stores data in that container separating data from other containers. The problem here is that selecting a default container for a specific site results in not being able to switch accounts for that specific site. A contradicting (dis)function.

Abstract/Résumé:
- You can switch profiles by selecting containers in the toolbar-button (entering the URL again)
- Ones assigned to a specific default container, you can't switch profiles
- You'll need to be careful entering websites you're not willing to have in the container since this enables tracking *
- To protect you from tracking you'll need (an) extension(s) that isolates Facebook, etc. from all other containers **

* You'll notice you're logged off from web sites (don't log in but start a new container). This extension is (not) for dummies.
** There's a Facebook container that doesn't work i.c.w. other forks (Google, Twitter, etc.). Also you can't switch profiles.

EDIT 3: For a workable solution install these extra add-ons

- Switch Container (https://addons.mozilla.org/en-US/firefox/addon/switch-container/)

- Temporary Containers (https://addons.mozilla.org/en-US/firefox/addon/temporary-containers/)

Moz://FifthAxiom