While playing against SurgeonFish earlier, my Esteemed Adversary got Quick Reflexes (or whatever the card is with the catching-an-arrow graphic on it). On the second or third time it was triggered, it did not completely swish off of the screen. It remained hovering slightly below the opposing character bar at the top of the screen, getting in my way. I could even use mouse interaction with it to get it to slightly bobble, as though I were inspecting it normally. And play continued! Several actions later, it finished swishing away. I do not recall if the card was being triggered again in play at this point. I'm starting to wonder if there's some sort of "incomplete animation" bug. It could be connected to my various cosmetic concerns. Maybe an issue prompted by my system being slow, or failing to fully load material, or something.
Yep, this is nasty bug that has been hanging around (no pun intended) for a while. To be honest, we're not quite sure how to deal with it yet.