[VFX] DJ Sona's Basic Attack Flickering

On DJ Sona, when basic attacking, the projectile is not visible, but for a split second it sort of 'flickers' in, then it disappears again. While her basic attack travels, the 'sparkle' particles still follow it throughout the whole animation, but the main basic attack particle only appears for one or two frames.

It happens on each of her forms, but doesn't seem to happen when her passive is active. I've played many games with her recently and it has always happened. I managed to screenshot some frames (linked) after my most recent game (sorry for the low resolution).

Thanks for listening!