Firefox’s vertical tabs are terrible. Hopefully they’ll get there, but right now they get themselves stuck in the expanded position any time you move over them to another screen, and they seem to pretty regularly get themselves stuck expanded even without that. Compared to the seamless experience that Edge offers with vertical tabs (and has done for many years), I was astonished at how much of a downgrade Firefox vertical tabs was.
Firefox’s vertical tabs are terrible. Hopefully they’ll get there, but right now they get themselves stuck in the expanded position any time you move over them to another screen, and they seem to pretty regularly get themselves stuck expanded even without that. Compared to the seamless experience that Edge offers with vertical tabs (and has done for many years), I was astonished at how much of a downgrade Firefox vertical tabs was.