Acrobat DC How to hide horizontal toolbars using Ctrl-H without going into full screen mode

I got a new computer and had to switch to the most recent version of Acrobat from a version that's about five years old.  I want to be able to have a pdf, showing a full page view, taking up around a third of my laptop screen so I can put it side by side with other pdfs or with a window showing a word processing application so I can take notes.  I could do that in the old version with ctrl+H, which got rid of the horizontal bar at the top with "Home, Tools" and the tab with the filename.  But now ctrl+H makes the pdf fill the whole screen, which is useless.  Is this a bug or is it just a really terrible design decision?  With the extra horizontal bar taking up the space, I can no longer comfortably read a whole page at a time on my laptop screen.