Quote Originally Posted by Jinko View Post
Well according to the devs by pressing H to face target or by casting a spell it will update your position on the server, so there is indeed ways the client can update your position to the server.
If they said that it is absolutely wrong. Here's a simple test:

1. Turn auto-run on
2. Cast something with >1s casting time (say, Foe's Requieum)
3. Cast something else as soon as you cast the first spell (say, Swiftsong)
4. You'll see a message saying 'can't do that while casting' but your spell will not be interrupted, despite the fact you're attempting a 100% illegal action (casting while moving).

If you were actually able to force an update of your position, then the result of your impossible action (casting while moving) should also come in. It clearly does not.