Weird Colours

Hi! I use a 2020 Mac Mini updated to the latest OS with Xcode installed. I have used UE 4.26 on a different Mac with an older OS before, but I am having some problems with this one. When I open a new project un UE4, my viewport shows me that all of the objects in the project are red. If I look up, any objects above me are very bright. Is this a setting, or a bug?
(Pictures below)

Having the same issue over here. Mobile preview seems to work fine though…