[GAMEPLAY] Xayah interaction with Gangplank barrels

While playing my last game I noticed this bizarre interaction that occurred a number of times, but is most obvious in the posted link. It seems that while you have feathers queued to pass through units by Xayah's passive Innate, it is not possible to kill Gangplank barrels as the feathers simply pass right through them.

https://www.youtube.com/watch?v=6TcM4pFMYWw

Example occurs at around 0:13.