Broken achievement city

I booted up the only achievement city map in mcpe to fly around in creative however when i loaded up the map and i moved off the achievement hunter logo the game was acting like i was stuck in a block and when i threw an ender pearl it went through thw ground and never teleported me and the cool down bar didnt go down then i tried eating chorus fruit but i couldnt eat it and it was doing the animation done when you throw an ender pearl or drop 1 item from a stack in pc and ce then i invited somone to the game and they could move freely and when i tried using /tp to get to them to see if it would fix the bug it crashed the game and when i re opened mcpe the world was "corrupted" having no name or seed and when i loaded that world i could move freely however there where chunks generating above y128 and chunks as i was flying were playing keep up with me