Noshift is only working once for me and then I have to relog to be able to use it once again for example flying kick to people in a party or in Prontera I would turn ns on but it would only work once for one flying kick and then it won't work again unless I relog.
Things i've tried: Running RO as Admin, Changing Settings via Folder as Admin then relogging.
I'm running Windows 8, Although I've had this issue even with Windows 7.