I’ve also had issues with 1.6.3 on Android (although they’re not the same as yours). I’m going to add them to this thread because I’m too new here to create my own.
On my LG-G2 (Android 4.4) and my brothers’ Lenovo Tab 2s (one running 5.something, and the other running 6.something), touch input is not working properly in menus. When in a menu with toggleable or combobox-like options, wherever is pressed, it will always behave as if the top option was pressed. For example, in the video settings menu, if bilinear filtering is toggled, it won’t change, but instead ‘show FPS’ will be.
This issue is still present when installing directly from the APK, but goes away when I downgrade to 1.6.0. If the controller overlay is on, though, menus work just fine through that.