Studs stacking?
 

I first starting playing EQ just before Kunark was released. I remember how it was such a pain to work on my tailoring because those darn studs did not stack. I had a make a few studs, then make a few studded masks, make a few more studs, etc.

I just starting making studded armor on Teal and the studs are stackable. Is this an error?

I don't mind. I think they should be stackable, but I don't remember them stacking when EQ first launched.