Vivaldi's tab groups have some problem with things like fiddliness (moving tabs between groups etc. is a pain) and grouping tabs doesn't properly update the tab

Vivaldi's tab groups have some problem with things like fiddliness (moving tabs between groups etc. is a pain) and grouping tabs doesn't properly update the tab cycling order so Ctrl+Tab can get really unintuitive since the internal structure won't match what is shown.