I've had this happen too. I'm playing a werewolf family and for me, it was only the males who did this, not the females. Or maybe it's just that it hasn't happened to a female werewolf yet.
I dont play much female werewolf to be honest, I cant say, but this guy is Don Gooseman from the Horse ranch pack, an elder... I played with Lily from the werewolf pack and she seems fine, it was the first time happening to me, so it will have to happen again so I can connect dots and put some more infos... I know it happened right after I did a lunar howl, if I remember correctly.
And it also happened to another adult werewolf, male, being in his work outfit and asking him to turn into beast form... and bam invisible.
