Beta worlds get weird

I downloaded the latest beta and i opened my world when the chat had on it that all my pets have suffocated so i was confused and when i looked around i found all my colored beds are red and a lot of weird stuff then i noticed that the water level is 128 not 62 as usual and when i dug all the way to bedrock i found that it extended from 65 till 0 and as i flew away i found that there were normal chunks and that the chunks around my base were risen