So I was playing Minecraft on my iPhone 6, and whenever I turned my phone off (locked) and back on again (unlocked) the app freezes for a few seconds, then crashes.

Steps to reproduce:
1. Open Minecraft and let it load to the title screen.

2. Turn the phone off (lock it) by simply pressing the power button.

3. Turn the device back on again and unlock it.

4. Watch the app freeze for a few seconds, then take you straight back to the home screen.

Status update: This was resolved in 1.11.4, but this just affects 1.11.1