Works like a charm! Though it seems that Temporary Containers ends up providing better isolation cross-site.

impeccable !!!

Cool extension.

мне очень нравиться, всё четко и даже больше

it should be done

It should be a feature that Mozilla should include by default. I'm very grateful to the author for developing such an excellent add-on, and I hope that he will continue to develop it for many years to come, even though the specifications of Firefox change from time to time.