Hello, there is a missing texture and/or “solid tag” anchor that allows you fall through the planet and get the infinite falling/DC bug. The location is in “The Siege Creche” where Volcanakk drops.
The coordinates are approximately 49.3 x 36.0 while in “The Siege Creche” map
or
77.3 x 50.4 while in the main world “The Forbidden Reach” zone.
As a note, I have only tested it as a goblin so larger models may not fall through the floor, but I can repeat it 100% of the time.