With vertical tabs enabled using Tab Search has become a hassle.
While before we had quick access to it from top bar it is now hidden within tab pillar which forces the user to move to tabs, wait for them to expand, move to Tab Search button (but not too far as the whole thing will close) and click it. That in turn will hide back tabs and open search.
I propose that Expand Tabs will be replaced with Tab Search button visible at all times. Auto Expand works nicely and I doubt many people switch modes constantly.
(On the way there it may be nice to remove now USELESS Top Bar by making browser borderless and move controls a row below.)