Look at your minimap, your own location icon is below the pathfinding button.
However your co ordinates are correct.
So something isn't loaded correctly, whether it is a packet(s) that is messed up or even a dmap issue.
Generally you see this when your co ordinates are invalid.
I have never actually tested this, but I always assumed the spawn entity packet controlled the clients display of co ordinates?
Did the guild war map change with TQs newest maps? Perhaps they changed the co ordinates and you are now teleporting in outside of the map boundary.
Just some guesses from me here though.
Kinda need more info, like what source, do other maps work fine