When I move a tab to another tab-group. I automatically switch to that tabgroup. It gets worse when I want to move multiple tabs to that tabgroup. Then every time I have to go back and click on the next tab to move it. Then I get moved again into the designated tab-group. That is pure anti-workflow!
I mininum is a toggle to decide whether or not someone wants to be moved with the tabs to the designated tab-group or not.
I would strongly advise to make it off by default. That is the standard on every other browser
