Bard Q range bug! [GAMEPLAY]

I've noticed that sometimes (all the time?) when you use Bard's Q on a target that's really close to you, the Q almost stops directly after hitting the first target, instead of going all the way. I just tried it in a bot game, I was using the Elderwood Bard skin (later tested the original skin, and the bug still applies), and when I Q'ed a minion that was just in front of me, it didn't hit a minion that was at the end of the Q range, so it's clearly bugged. It doesn't matter if I aim it at a wall or a minion, the Q range gets shortened no matter what.

I have added 4 pictures where I try this out on a small raptor against a wall. Picture 1 shows that the raptor is close to me and that my Q range is long enough to hit the wall, picture 2 shows that it didn't hit the wall even though it was in range. Picture 3 shows me standing farther away from the wall but with the raptor right next to the wall, picture 4 shows that the Q hits both the raptor and the wall. I know that in the second scenario the Q gets some extra range since it hit a target, but it doesn't explain why it didn't reach the wall in the first scenario, since I was standing closer to the wall and you can clearly see that my Q has enough range to hit the wall.

Is it possible that since Bard's Q gains some extra range when hitting something at max range, this somehow overrides the original range of his Q, and when used on something that's really close the range becomes shorter, since the extra range isn't as long as the original range?