[UE 5.2] Water - Reversed reflection issue

Hello everyone, I think that I have an issue with the water reflection, it seems to be reversed (can be seen on screenshots).
This was working fine with my yesterday build, and today it seems to be broken. I already have searched a lot and play with a lot of parameters oto fix that. I also restored a previous save of my water material, but nothing that I have tried fixed that …

Does anybody already have this issue ? What steps can I follow to fix that ?

reflection issue 1
reflection issue 2

Little update just to let you know that I was able to fix the issue by checking my Unreal Engine 5.2.1 installation by clicking on the check button in the Epic Games Launcher. (Screenshot below).
I’m still curious to know what parameter was causing this issue so I don’t close this question now in case someone has the information …
check button