Not 100% on the version# above - I just started playing Realms using MCPE 0.15.0 2 days ago.

Breaking a chest that has contents in it seems to lose some or all of the contents. The first time I did it I did get some of the contents, but later noticed some had disappeared, I didn't know why at the time. I can't guarantee the disappearance wasn't due to a chest inventory bug. I didn't connect it with breaking the chest until later.

The next time I broke a chest, everything disappeared.