My sister and I were play MCPE and I see an update, so we both update and when we start a new world, on my iPad 2 (ios 6.1)She joins and I don't see ******** joined the game, then she says a few seconds later, ***** disconnected from the game, yet I see neither of these. So I tell her to exit MCPE and then open the taskbar (double hit home button) and exits minecraft, then she joins our new world. Everything seems to be fine, But when I make a chest and she opens, She Crashes.
Therfore making me believe that to fix it, we have to repeat the taskbar etc*, that is proven.By the way, my iOS is 6.1 and My Sister's is 4.3.2 or 4.3.x
To re-create it...
I don't know if this will work again, but it did for me:
1. Join a new or old world, then I guess make sure that you can see that the person had joined.
2. Then open a chest or I believe any GUI and you will (If I am Correct) Instantly black screen.
3. Blackscreen than almost instantly goes to the Screen MCPE is on.