What is happening:
The sand quarry where the NPC Quicksand is located currently has a layer of water floating at the top, covering a small portion of the quarry. You can swim on it as well as walk/fly on the ground underneath it and even fall from it.
What should be happening:
Either the water should not be there or it should cover the entire quarry, essentially turning it into a lake.
Steps to reproduce the issue:
Simply head to the sand quarry behind Midway Village, on the West side of Heartlands.
Game client version:
Windows Seven Ultimate x64 Service Pack 1, Build 7601.