Ancient Lichen Spawns

Ancient Lichen does not appear to be spawning as it should in instances. Should spawn in Mana-Tombs, Sethekk Halls, The Underbog, Auchenai Crypts, The Slave Pens, Shadow Labyrinth and The Steamvault.

Attempted to herb from boglords (didn't spend a long amount of time doing this though, so may just have been bad luck) and didn't see any.

Cannot post a WoWhead link due to new member restriction.

Yeah we still gotta tune up the forum sorry.
Anyways to the topic: ancient lichem is spawned as intended, it's not supposed to be everywhere

Really? Doesn't seem so. Found one (didn't explore deep in) inside of Mana Tombs, but 0 in Slave Pens and Underbog. I farmed it extensively on retail so it's guaranteed to spawn but it's missing here. Just wanted to give a heads up.

I have spawned some Ancient Lichen to Underbog and Slave Pens