This extension worked well for a week or 2. Then it lost all my site settings. Now it actively prevents sites from opening in anything but the default container. Got into a race condition where Facebook Container would open a link in a facebook container tab, and Containerise would try to open it a new tab with the default container. The resulted in several hundred tabs being opened non-stop, even after restarting the browser.

PLEASE FIX THIS!!! I love the addon when it is working and I need something like this.