I reported this yesterday but it was moved to the Insufficient Information forum: http://forum.square-enix.com/ffxiv/t...ong-way-around. Hopefully this makes things more clear:
  1. Take note of how many unique Levequests have been completed for Botanist under Achievements -> Quests -> Levequests.
  2. As a Botanist, accept one of the new Botany levequests from Kugane.
  3. Complete the levequest.
  4. Go back to Achievements -> Quests -> Levequests. The Botanist achievement's count will not have increased, but the Miner one will have incorrectly increased by 1.

The same thing happens the other way around: if you're a Miner and complete Mining levequests they will increase the Botanist achievement's counter and not the Miner one.