Multiple worlds at same time(using chest, maybe android only)

What's happened:
When i go to the chest in survival mode and press "Back" button (not in-game "back", but whitch is in android devices) I appear in the main menu, then i can go to another world, then go to any world and in there i can't do anything, the screen is shaky and i cant move + creative inventory is empty

What should happen:
When I press back button in chest ui it should go back to gameplay.

How to do this bug
Step 1:
Open the chest

Step 2:
Press Android device's built-in back button

Step 3:
Once you appeared to main menu go to another world