This is so far the best replacement of the older Tab Groups. Very important for me that it allows the music to continue to play when switching from one group to the other.
I see a lot of remarks that this not works.
But , I have opened Spotify web player, in a tab in one group and "pin it"
open the next group, make a new tab with spotify and pin it.
that for every group, such each group has a pin tab with your music player
Now,when switching between groups, the music will nicely continue to play,even without a hick-up.