Was playing DoW2 campaign, and I had to go kill a Carnifex. When I got to it, I threw all my troops at it, with Force Commander in the lead, chainsword swinging. I didn't use the Stimulant kit so it ended up killing him, specifically, using the finishing move where he picks him up in his mouth, swings him around, and spits him away. He landed on a cliff above me where I couldn't get to him. I was not very happy and it took me longer to kill it, but I laughed afterwards.
Don't know if that's exactly a bug or a glitch, but that's as close to one as I can think of.