Skillshot malfunction [Gameplay]

If you use a skillshot while your cursor is over your champions portrait the skillshot is thrown backwards and if any ally portrait is being hovered your skillshot will throw in the direction of the ally champion on the map. This happened in multiple games with a 100 percent accuracy, I actually couldn't believe it every time i tried the skillshot (in this perticular cases, renektons slice and dice along with a teammate xeraths abilities) 100 percent of the time would dash in a direction that was not in the cursors direction.