[GAMEPLAY] Zed's shadow's(W) aiming cursor stays after shadow disappears

1. Summon Zed's shadow (W)
2. Wait until the shadow's duration is up
3. Shadow aiming cursor still stays

This happens everytime, but only for a short moment. I am guessing this has to do with the durations of W? Attack damage is unaffected, so there is no shadow's razor shuriken or shadow slash coming out when I use the abilities after W disappears. I'm not sure if the ult does the same thing.

Photos and examples: