[robinhood]

Amazing news. Wonder if this will be synced on multiple machines through Mozilla Connect, since that wasn't the case with the Mozilla’s Multi-Account Containers extension before.

I hope it is, since it was a major pain point before.

[sfRattan]

The Multi-account containers extension does sync via Firefox sync, but you have to go into the extension's settings in each browser and manually enable it. Annoying, and took me a while to find it, but it's there at least. Hopefully won't be necessary to manually switch on once containers are a part of Firefox proper.