This is on a Nexus 7 2013, which is a 1280*720 resolution; interestingly that’s the same resolution as my phone, which doesn’t display the problem! My son’s tablets are also the same resolution, and do display the problem.
Do all of the devices on which it displays properly have dedicated physical buttons for back, menu, and… the other one at the bottom? This might be a problem with the app not properly resizing when those virtual buttons occupy part of the screen.