When using a Surface Pro 4 having touch targets directly on the bottom edge cause the keyboard to interfere with the ability to hit the controls.
Affected controls during playback: Playback, Playlist, Volume, Zoom, Players, Full Screen
Affected controls on main screen: Now Playing, Players, Refresh, See More
Suggestion: Move controls up and towards the center. The large playback controls in the current Windows app are much more touch friendly.
Plex Web has also moved to bottom screen controls. If this is the new design language that Plex is using I highly recommend reassessing the touch usability of such language.