Heartseeker (maybe all?) Varus Q Missing near range limit

I was using Heartseeker Varus.

I recently played a poro king game. There were at least 4 or 5 times in that match where I watched my arrow clearly hit a character, but that character would take 0 damage. It was always towards the end of the range of the ability. I am not talking about the very tip pixel of the arrow looked like it touched the enemy champion, I mean the entire arrowhead would intersect with the character, but they would not take damage. The shorter-range shots behaved normally. My ping for the entire match was a steady 60, and I had no lag spikes or other anomalies.

I suspect the graphic for at least Heartseeker Varus' Q might be too long, but it was really frustrating to use.

I tried to get the replay off replay.gg, but I guess they don't save poro king replays.