I can hear AND smell a rogue male and I don't see his outline

[PopsicleNinja]

It happened in just this one case, but there was a rogue male near my tribe. When I checked on him once to see where he was, this happened:

I could both hear AND smell the rogue male, and yet he wasn't giving off a red outline. Even weirder, the rabbil next to him had an outline while he didn't.

[ValkyrieWolff]

I had that happen and it turned out he was stuck? Like he wasn't making any moves or anything and I originally thought he was dead and just glitched, but then I brought a female creature down to try and mate with him (because he had some good genes) and he would mate with her when she was next to him, but he still couldn't move? I have no idea why it happened, but at least you know you're not alone with the strange ghost rogue males?