How much of a problem this is depends on what app I'm in. Kindle (left), blessedly, puts black bars at the top and bottom and disables the clock bar and anti-navigation bar at the bottom, so I get what I want: a rectangle.. But say, Shonen Jump (right) doesn't, so I get a jangle of bars of various sizes and colors, and the screenshot doesn't capture this but the top bar has a clock, battery, wifi strength, and for no reason whatsoever, three dots and a triangle (these do nothing)