Ascalon Catacombs "4th path".
Refresh.
I think it should be more important because from this roof can jump in every place in dungeon..
Instructions on how to do this help the devs much more than spamming screenshots:
Kill the spider queen and take the priory waypoint.
What I find really interesting about these bugs (not just the one in AC but also in CM and a couple of other dungeons where you can “walk on the roof”) is that they show the huge amount of totally unnecessary geometry that these dungeons have. Even with all the engine and GPU optimizations, this stuff increases load times and reduces the frame rate.
On top of that, all the mobs and bosses of the paths you didn’t pick are still generated by the game, and their AI / patrol code is run by the server (again, requiring resources and worsening performance). Even though you are never supposed to go near them.
That just sounds like unefficient programming.