Bug Water has a strange flicking behavior in Unity 2021.2.18f1

Hi guys,

I have a strange behavior with water after changing my project to the Unity version 2021.2.18f1 with M1 Silicon support. (My device: Mac Studio Ultra). I'm using Gaia Pro 2021.

My water is showing like the example in the image and is flickering hard:



In general I'm using water with Gaia Pro 2021. But if I change to Aquas, I get the same result. So I think the issue is not the package, but anything in the Unity Editor itself.

By the way, here are some Gaia Water Settings:



Is there a reason for this water behavior? Maybe a known issue? And is there a workaround? Before updating the Unity version, the water looked fine.