Still frustrated that Edge is so appealing for this reason alone.To answer a more recent question from devs: tab grouping is just a nice-to-have. Please don't hold up basic implementation of vertical tabs just for that.There shouldn't be much to eval...
@PeskyHyena-- I agree. Vertical tabs are the only reason I use Edge vs. Firefox full time. The old horizontal row of ever-shrinking tabs is an outmoded interface.I want to use FF for everything. Please make it happen, Mozilla.