Here's a screenshot:
http://cloud-4.steamusercontent.com/ugc/528385841672077814/D46CFCBC79917B0A9B0B9228364A33652D229D63/
As you can see, the Dank Spore has been injured by my ranger, and an arrow is flying towards it, regardless of a wall being in the way.
This is the first level of Catacombs in the First Fires district.
(I cant upload screenshots so i've linked it).