Although it can auto-hide, and the interface is improved a lot, it is no so great to make the bar too thick and it takes up a chunk of space.
The old bar is 46px, the new bar is 55px.
I want the bar to be less than 46px thick. Moreover, I suggest changing the bar's color to the same as the footer's color in respect to dark-themed wikis.
I have also made some CSS tweak:
.wds-global-navigation__search { width: 50%; } .wds-avatar { border-width: 1px; }