Healing Items for a mage

I’ve set up MR robot for my TBC arcane mage with phase 3, but phase 2 raids set up. For some reason, BIS is saying Teeth a Gruul and a couple of other healing items are my best in slot. I think there’s a bug.

I’d need a snapshot to answer this for sure. Usually this happens if you are severely mana-limited and the optimizer will then use items that give you more mana, since more casts usually increases damage more than slightly increased damage to each cast in those situations.