This is just a very small bug, but it's happened a few times (on both Elves and Dwarves, No time to Grind, Permadeth). When Inconsequentia gives you a quest that involves finding an item then using it on a shrine/monolith/etc, the item will change its art the first time you try to pick it up. For example, the artifact will use the Dr. Who scarf art, and the first time I try to pick it up, it will change to the Wizard Sleeve art (name stays the same, quest can still finish). Also, sometimes monsters I've killed will get stuck on their "just before dying" art. Again, it doesn't really hurt anything, but it gives me a heart attack.
The first thing has happened to me at least once too, I think. Went to pick up a kitty, but didn't pick up a kitty but something else. The second also happens to me sometimes, and yes, it's terrifying.