Hostile mob spawn bug

Survival map, realm, hard difficulty.
MCPE 1.0.0.16

My huge castle (and spawn place) intentionally have no place for hostile mobs to spawn (Well lit)
Instead, hostile mobs spawning everywhere in huge amounts ignoring all the spawning rules.

Added: Just saw 2 zombies spawn literally 2 blocks away from a torch. IT IS REALLY ANNOYING BUG! FIX IT PLEASE!