[Gameplay] Ezreal Runeglaive+Iceborn glitch

When playing as Ezreal i built a Runeglaive and an Iceborn gauntlet, when i used my Q (Mystic Shot) it only procked the runeglaive but a few Q's later both runeglaive and iceborn procked. This continued throught the rest of the game, sometimes only runeglaive would proc and sometimes both iceborn and runeglaive would proc. This only happened on Ezreals Q though, it never happened upon auto attacking. Iceborn appeared to proc more often when closer to the target and there was never an instance of runeglaive not procking when using Ezreals Q.