So interesting! For Hayden the same thing happens for males, but some later sex scenes you can do even if you are top/dom. If you're interested in sex with Blake, for males if you enter the forge and you have Libido: 50; Str:12 you can fuck him, also if you have L20; End Muscle Ointment, you should be able to make the "massage" talk that can end in sex.
The same bug happens to mMC. If you want, you can lock your orientation in the "preference" menu.