Seeing spirit while she phase-walks

Indigoua

So i play DbD on steam, and this bug only occured once. When someone's hooked, or scream because of the doctor, you see their auras and there's a "black circle" around them and you can sometimes see hooks aura through it, and apparently you can also see the spirit while she's phasing through that "black circle". I didn't see her like you normally see her, it was black and not blue, but I still did recognize her and it was enough to know that she was coming towards me.