Hello,
It's a normal bug happens sometimes, the solution for this is to type /sync but if it doesn't work you can simply jump, i've experienced this too and jumping is the best solution and it works. But I don't know why it didn't work for you, weird.
Write an article expressin about how you felt when that bug occured so we could have a better undestandin .
~Sani
Omg no, Altus v2 xd