Works well untill you change computer and set up a new browser. The containers are synced in random order an there is no way to sort them in "Open new tab" menu or in about:preferences#containers tab. There is sorting when clicking on a badge but it doesnt affect order in new tab button. So if you want to have same sorting in 3 different browsers you have to delete everything and create containers one by one constantly syncing and checking all devices. Horrible UX.