Weird background effect - seeing my pawn in the cloud/skysphere?

Take a look at the start of the video - puntloos.mp4 - Google Drive

It looks like my pawn, a red player I suppose- is being projected onto my skysphere. It’s not just that my camera is behind the pawn, as you can see it only shows in the background of the scene…

Or a screenshot here:

What’s happening? How can I fix this?