I have encountered a number of collapsing structure flaws in GW2 that trap the the player with no way out but paying to a waypoint.
I think that those are bugs and should be fixed. In particular collapsing towers, trebuchets where a player can be easily trapped in the debris with no way out.
Another type is poorly designed places where falling traps you in a crevice that can’t be jumped out.
I include a photo of such a place in Malchor’s leap Vista "Garden of Ila where I was trapped in the bones. It looks like one can go out, but invisible barriers makes it impossible to do so. See attached photo.
