There were some eyebrow issues, correct. It's pretty much varies from piece to piece. The problem was that the paint wasn't really applied correctly to the sculpt. Some collectors managed to fix this themselves with not too much of a hassle. Others chose to simple have the entire thing repainted.
I.
Actually the brow seems to be sculpted in a way that cause the paint to be applied unevenly... Not sure why it came out that way since the proto did not have it (Mold issue?) but all the eyebrows were painted that way. It's an easy fix if you want to... It does not bother me so I leave mine alone. Trust me... If it was an issue It would not be my fav.