[catabur]

Right afterwards, we were prompted to discard cards.
(yenten temps_deck: 16)

It was Endless Noten Yenten. (amazingly hard to screenshot things when there's a 10 second counter)

[Trexmaster]

I'll also add that the cards have a habit of being dealt as 'back' then never being flipped up. And sometimes they're invisible, like in the OP, to boot, so you can't even discard them or know they're there without a debug-check.

[catabur]