mob spawners are turning into pigs.

After last xbox one update mob spawners are turning into pigs. It is effecting both my new and saved games as well as co-op/multi player games.

No matter what seed we use myself and two other players are seeing mob spawners go from first round of mobs until you torch the spawner cube to pigs.

When will this issue get fixed? We have stopped playing for now and hope for a fix soon!!!