I don’t know whether or not this is related, but this just occurred during a Delve and:
I have no meaningful steps to give. I had just returned from leaving the game on suspend for a bit (<1 hour), then went into a Lv.50 Delve with a re-used team. Everything was completely normal behavior, aside from the screenshot you see above. This occurred in a “Dark Magus’s Secrets” room, and the enemy summoner (who was since slain) rolled a Ghulemoth. But notice its spellcard graphic is horizontally squished by 25% – AND that only Ghulemoth seems to be affected (notice my Sol’Zara’s spellcard displays correctly; the enemy Grave Seer was also unaffected).
After the battle, I checked my Troops page and saw the same thing:
But again, ONLY Ghulemoth was affected here, any other Troop displays fine.
Wait – it’s already been reported, over there. This seems distinct…