Really, really weird graphics bug

So… ever since you guys introduced Mengsk, I’ve been getting these really really weird graphical bugs that glitch out the 3D unit portraits. The background and portrait animations aren’t cropping to the borders of the UI appropriately, and the only fix thus far has been to switch to 2D portraits. Which is, obviously, not desirable. Help?

EDIT: I submitted a ticket and was told that based on my description, it sounded like a bug, and that I should edit this post to say I’m using the Mac SC2 client, running OSX 10.13.