The one with the host & the player chestduping?
No. Go to system > Storage > Clear File Cache. This reverts Minecraft back to the first version (its patched, all worlds will still work.)
Next, Boot up minecraft and get a dispenser. Open the dispenser, place the item in the dispenser but don't close the GUI, have your friend break it and everything will turn into a stack of 64. You're not done yet.
Take the stack of 64, and manually place one over another until you got a full stack of 64. You'll make 2 stacks, a non glitched one, and a glitched one. go from there.