? is this a genetic bug

Hi
I did a search for a buckskin quarter horse stud and several seal brown cream stally's showed also.  It was for western discipline.  Is this correct as I am not au fait with the genetics side of breeding or is it a bug? not sure if needs reporting?

I think I also reported this bug a while ago while trying to search for the A+ allele. It shows both seal and bay horses (with no A+ gene). Not sure why