Graphical glitch when playing succubus ect. with an empty hand during this weeks brawl.

Confirmed. I had a full hand and this happened to me when the spell that gets created from the brawl is the card that gets discarded from her effect.

Very old known bug:

https://github.com/HearthSim/hs-bugs/issues/51

Guess patch 4.2 didn't fix it.