Interesting… I might test that too! I do use a Mac, and it is happening with the subsurf as the last modifier on the stack indeed.
The odd part is that it only happens when I have it enabled in edit mode, and when edge loops are added. I haven’t modeled anything with it enabled in edit mode, so I can move along.. It’s just.. odd
I actually don’t know the answer to that. lol. I just saw that and clicked some buttons. I guess we can see other artists projects as they come along? No idea…