Minecraft PE - "Building terrain" bug

When I'm trying to open one of my worlds, Minecraft PE gets stuck at "Building terrain". This app doesn't become unresponsive when this happens, but I simply can't access them. This bug is found in the 1.1.0.0 version, but it also exists in the 1.1.0.1 update. For me and other people will be a pleasure if you fix this.

Steps to reproduce

1. Open Minecraft PE
2. Open a new world, do some structures in it, tap "Save & Quit", and restart MCPE
3. Reopen the world and MCPE gets stuck at "Building terrain" screen

When this happens?
Sometimes. When I delete user data from MCPE, the app works again normally.

Phone: Lenovo A328