Well, I guess I'll have to stick with singleplayer.π
I was the client on my friend's world and I was actually able to open my door chest (it had nothing but doors in it) but 5 seconds later it would crash.
Hope that helpsπ
Fingers crossed for MCPE 0.6.1 π
Just break the chest and collect what's in it.
Also because you are in multiplayer you can have the host open the chest and chuck the items back at you.
I found that bug too...
I've seen that bug too. So annoying!