Yes, all epbt (and GMK) have these sprue marks on the north side of the caps. It's part of the manufacturing process. [/quote]
Wow, I am shocked, especially if even GMK has them ... I mean even low key OEM and small time manufacturers realised it's better to inject from the bottom.
With a community with a high standard as ours, that often obsesses over small imperfections in print and non-restrictive warping of keys, I assumed those high cost keycaps were actually better, especially GMK ones...