0.12.1 Pre-release, 0.12.1 Beta 2, 0.12.1 Beta 3
Tablet - Android - Samsung Galaxy Tab 4 Nook
There is a back button loop after making a selection in keyboard layout.
Steps to duplicate
-Open Minecraft game.
-Go to to options.
-Click Controller icon on the left.
-By keyboard layout click "customize".
-Select the first option "qwerty".
-Click back button.
-Click back again, you will not be able to get back to home screen unless you close your game again.