Thank you very much for the reply. For me, the most important mobile feature not working correctly is the dynamic layout / reflow, particularly in portrait orientation. YouTube is the only app I'll rotate my phone for. Please notice in all the portrait orientation screenshots that the plus, gear, and exit icons are 1) invisible, and 2) overlapping the focus, priority, and sidebar icons. That makes it impossible to use. Every time I tried to open the sidebar I got immediately logged out from the overlapping exit button.