World generation glitch

Ok so me and my friend where playing MCPE on both are phones then I got my iPad and joined the works on that and what we did on the iPhone we broke the ice floor and replaced it with wood and then I seen that the floor was missing but on my friends iPhone it was wood but when I seen it it was water I tested it and I started drowning its like the wood block was still there but invisible and if I feel through it I die I seen my friend just standing there like he was on a block like floating on water we where in survival but other than that
Fix: there is no fix found
Found by:Me Jake and my friend Brandon