I saw this in Android 0.7.6 in multiplayer survival games host and remote, but never single player games.
I've seen this behavior in Android 0.7.6
I also see this on Android 4.4.2 on a Nexus7 for multiplayer games on 0.8.0 as released to Amazon Store.
When you use any item other than the first in the inventory, it is immediately covered up by the first item in the inventory.
I saw this behavior too when creating a new game on Android 0.8.0 as published to Amazon, Nexus 7 KitKat 4.4.2
On the game name and game seed fields: Deleting text didn't appear to delete the text, but it did when you saved the changes. Typing doesn't display on the screen while typing, but does save.