I have died twice now in the last couple of weeks during the big drop when you jump down to the final boss. I’m not hitting anything on the way down. When I get about 2/3 of the way down, my character goes splat, and before you rez, you can mouse around and see there is nothing at all that I hit, just an invisible barrier/floor. I’ve been playing WotlK dungeons since it came out as an xpac and this only started happening a couple of weeks ago.