This piece of information is not mentioned anywhere from what I’ve checked, even though it’s somewhat crucial. Expecting other players to block the path of something seems like something anyone would do. I only discovered this after testing.
Sorry for the late response. The current system is still under consideration in regards to how character models should be regarded for pathfinding (many moving parts, characters popping in and out of places as players join/leave, characters constantly moving, etc.).
In the meantime, I’ve added a note about the current behavior here:
