Rider marks every *.Target.cs file with errors

Hi there,

I am using rider 2022.2.4 and recently upgraded to unreal engine 5.1. After the update rider seem to be quite confused by the c# version or something since it now marks each and every .cs file in the entire ue code base as wrong.

Any idea how to fix this? I checkout the latest rider version, which does not have the error. I don't want to upgrade though since it seems silly that rider can not detect which version is used.