Problem with movement and spellcasting

Since the last update of my client I'm having a problem ingame, before I used to be able to hold down the cast key on my keyboard and move around with the range indicator still on and when I release the key the spell is cast, but now any time I right click some where (to move) the selected spell gets canceled. I thought it was a game bug in the first game, but I restart the client and then the PC, and this still happens. Can this be fixed because, it's very hard to cast any spells now, half of them get canceled especially skill shots.