When you join a world that is ported from PC, it is split in half to the 2nd player
MCPE-6814
Split world glitch
Resolved
Invalid
0
(Unassigned)
Unconfirmed
Tablet - iOS - iPad 2
0.6.0, 0.7.0, 0.7.3, 0.7.4, 0.7.5, 0.7.6, 0.8.0, 0.8.1
Retrieved
That's unsupported, and thus might have bugs.