Bug with Garen's Ult

I was just playing an ARAM on the new map and was playing garen, hit level 6, got next to a Nid which was at like 75HP or so and I ulted and she got a shield. She was still in cat form so so had no ability to heal and she got a shield. I ended up not getting the kill and she walked off. This happened several times with multiple champs on the other team.