Bugs in the Jurassic World map.

I just bought the Jurassic World map in Minecraft Pocket Edition. Every few minutes, it takes me out of Minecraft for no apparent reason (I've checked if it was for doing a specific action like opening a chest, but it seems random). It doesn't happen to me with any other map. Also, I think some dinosaurs have started to disappear. Please fix it, because it ruins the gaming experience.