Xerath's Q (Arcano Pulse) MAJOR GLITCH

There is a 13% chance that when your playing xerath your Q (Arcano Pulse) might conpletely stop working re-binding won't work and dying only has a 36% chance of fixing this the only absolute solution so far is relogging which wastes time. IS THERE ANY SOLUTION TO THIS GLITCH OR DOES RIOT NEED TO FIX IT?!?!?
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