Great feedback. A segment of people seem do correlate windows with containers more easily than tabs. We are measuring both window & tab usage in the experiment

Great feedback. A segment of people seem do correlate windows with containers more easily than tabs. We are measuring both window & tab usage in the experiment to get a quantitative sense for it too. I personally use Tab Groups add-on and associate each of my tab groups with a container, but I also mix my containers in a certain group. E.g., sometimes I'm on hacker news for fun, and sometimes I'm here for work. ;)