I tried to put an aura on multiple token recently and it didn't show correctly, when I tried to put an aura on a token it just looked like I put a size 0 aura, which was not what I was going for. The only reason I have found of why it could be buggy is the dynamic lighting ? I tried putting an aura on a token on an other game in which I didn't have dynamic lighting enabled and the auras showed properly. I would have added screenshot but I'm on my phone right now and typing this is already hell.