The missing foil in the corner is really strange. If it were bleeding of the opaque white layer into areas it shouldn’t be in (thereby obstructing the foil), I don’t see why the odd shape would reflect in the surface gloss. If it were some weird defect in the original foil cardstock, it also shouldn’t leave any sort of artifact on the surface. The missing foil wrapping around the text box (like you mentioned) and the middle artifact just looking like a bit of cloudiness (nothing like the corner one) is also a bit strange.
Not sure what’s happening. Weird card, indeed. Might be worthy of its own thread to field theories on what’s happening.
Found the original thread discussing card printing I was thinking of, but it’s a video by pfm. But it gets all the points across about the printing process.