[GAMEPLAY] Boomerang Blade hitbox inconsistent on the way out and back in

When playing around with Sivir in the practice tool, I noticed that the hitbox on her Q seems to be slightly larger when her blade is returning to her than when it is being sent out. This isn't a really huge issue, but it's noticeable enough that I managed to discover it by accident messing around for only a few minutes.

Steps to reproduce:

1. Enter practice tool. Create a horizontal line of training dummies, all within the maximum range of Boomerang Blade. Purchasing Rylai's helps to make the effect more visually distinctive.
2. Stand half the width of Boomerang Blade's hitbox above or below the training dummies. The bug occurs regardless of which side of the training dummies you stand on (which is I was how I was able to confirm that this wasn't just me being bad at placing training dummies in a straight line).
3. Throw Boomerang Blade as close to parallel to the line of training dummies as possible. Do not move.
4. If positioned correctly, the spell will hit no training dummies on the way out, but will hit some or all of them on its return to Sivir. It may take some slight repositioning to get it right.

I'm able to reproduce this bug with relative ease and perfect reproducability -- that is, it's not hard to find a place where the incoming blade hits what the outgoing blade didn't, and once such a place is found, the inconsistent hitbox will occur every time.

I was unable to get screencaps or video because my toaster of a computer can't handle it, but I would love if someone (without a toaster) who could reproduce it could upload something.