I noticed them disappearing at some point between the beach and reaching the grove (not sure exactly when, it was a long session). Then after completing Chateau Gobbo and teleporting to the grove to talk to all the tieflings again, they were back.
Same happened to me. After lvl 3 level up all scales are gone. Pitty, they looked great too This never happened before. Seems like it was introduced with patch 9?
I see that some folk are reporting vanishing scales on level up, and others appearing ones. Does this mean it can alternate on different level ups or is it a one-off thing?
"You may call it 'nonsense' if you like, but I've heard nonsense, compared with which that would be as sensible as a dictionary!"