I explain it in another comment, tl;dr: have to edit userChrome.css to give it a more streamlined look (and Mozilla calls that feature “legacy” in about:config since v69 which kinda worries me about that feature’s removal) and I’m not sure if some extensions might conflict (Would it have issues with Simple Tab Groups). Pulse does it natively and really well, so I’m happy with it.
sorry, why not tree style tabs?
you can hide the normal tab bar and only have the tree style ones on the side
I explain it in another comment, tl;dr: have to edit
userChrome.cssto give it a more streamlined look (and Mozilla calls that feature “legacy” inabout:configsince v69 which kinda worries me about that feature’s removal) and I’m not sure if some extensions might conflict (Would it have issues with Simple Tab Groups). Pulse does it natively and really well, so I’m happy with it.