I was completing the “Help Paenula train the troops” heart in the Plains of Ashford when I ran across a bug that dropped me through the ground and into the water underneath (screenshots attached). I managed to repeat the bug twice, and a friend was able to do it as well; so it is definately repeatable.
I started out speaking to Paenula, the proceded up the ramp towards the pit fight. When I entered the pit a box promted me to choose which creatures I wanted to fight. I selected “Minotaur,” then the box dissapeared. Not really realizing what was going on I crossed the pit and started to leave out the other side, but then the gate dropped on my head and the minotaurs entered the pit. I wasn’t able to move forward or backward, and when I used “Ride The Lightning” I fell through the world.
I was able to waypoint out, and I tried it again, this time intentionally standing underneath the gate. The exact same thing happened. When I had a friend come verify that it wasn’t just me he fell on his second try (the first try he was in the “falling” state, but stuck inside the gate as I killed the Minotaurs).
I figured you all would like to know about this.