Minecraft wiki entry for Development_versions, associated text: MCPE-9709 – Unable to fly in creative mode
MCPE-9712 – Unable to interact with entities
MCPE-9723 – MCPE 0.12.1 build 4 you can't mine with picaxe so you can't get stone so its not playable fix plz
MCPE-9729 – Cant Dig Items In Survival Mode