it either goes to the top or bottom when trying to move it... and its very fast
well the screen moves like crazy (like when u play minecraft in a vm) I kinda cant explain it sorry
Clouds render through blocks for me and do also the same behaviour as described above.
If needed i can also add a screenshot from windows. Just hit me up.
So the same happens to me, now after regenerating the chunks, they stay (at least until now).
I play single player. Also a whole village dissapeared.