[Gameplay] Visual Bug with DJ Sona's "Power Chord" Ready Aura

It doesn't impede normal gameplay, but is a noticeable graphical bug to the keen eye:

http://1.bp.blogspot.com/-Ht816UjfXhg/VNGGay_BuGI/AAAAAAAAjWA/snM_6L0w9B8/s1600/r1.jpg

See that blue spiky wave of energy in the background? It's different for each version of her, but that's beside the point. The point is, that is what we're looking at here.

WHAT THE BUG IS When DJ Sona has her passive ready (as shown by the aforementioned aura behind her) then toggles music tracks, the aura does not change to match the music style (i.e. if she switches from Ethereal to Concussive while her passive is ready, the aura's style remains as Ethereal's).

What's even more odd: let's say the last spell she used was her Q. The aura is blue to show that. She toggles music styles, and the aura still looks the same. If she casts her Q again before she either casts any of her other spells or uses up the passive effect, the aura STILL does not convert to the correct style. It will when she casts a different spell or the next time she makes her passive available to use, though.

HOW TO RECREATE THE EFFECT 1.) Play as DJ Sona. 2.) Use abilities until Power Chord is ready to use. Take note of the current look of the "passive ready" aura. 3.) Toggle music styles. Notice that the aura has not updated itself to match the current music style. OPTIONAL STEPS: 4.) Use again the last ability you used. Notice the aura still has not changed. 5.) Use a different ability, and see that the aura has now updated itself properly.