A great add-on in basic concept, but full of small frustrations. Once created, tab containers can't be rearranged. And if you leave a container open when you close the browser, when you reopen it your tabs will likely as not have been dumped out of their containers and there's no way to fix it except by opening the menu and choosing "reopen in container" for ever single tab individually.

Still, even if it's buggy I'm glad this extension exists. Hopefully they fix it someday so I can bump this review up two more stars.