While in creative mode, if a WiFi visitor clicks / taps on a chest (either placed by them or the map owner) the game will glitch and force close.
Even though it is create mode, and there is no reason to really need a chest. It should just act as another block and not attempt to open. This is why it probably glitches.
1. Go to a creative game mode map
2. Place a chest
3. Have a friend join the game via WiFi and click the chest
4. They will be disconnected from the map because their app force closed