This add on has too many issues. The idea is great, but it keeps opening websites in the wrong containers, it doesn't let me manage what websites to open in what containers and the "Remember my decision for this site" checkbox does absolutely nothing. It keeps asking to open the website in the wrong container every single time I open a new tab. This add on doesn't make life easier, it's just one big frustrating obstacle. It's easier to just open a second browser.