This error only happens in game. Basically, when you set a block (in "Joystick & tap to Interact" mode), the game put the block on the wrong place. Some images can help to understand. The bug also happens when you fight some mob, or break some block. Hope you guys understand. 

Well, that's my first time writing here, and I'm not a english speaker, so sorry for any problem in my text, or anything else. Thank you.