Steps to reproduce this issue:
Enter a world with Vibrant Visuals enabled.
Go to a place where you can see water reclections.
Run this command.
/effect @s NauseaExpected rusult:
Water reflection would work correctly with Nausea effect.
Actuals result:
Water reflection doesn’t change with Nausea effect.
This also happens when having the effect that staying in nether portal blocks gives you.