Minion aggro bug

So I notice when proxying, that sometimes a single minion in a group will not aggro me, and just keep going as if I weren't there at all. Even when the poison is on them, or I am in melee range, they just nope on outta there.

It's not a major issue, but certainly a bug in the code somewhere, and is annoying to lose that extra gold when it happens.

This isn't them de-aggroing if I get too far away, it is as if they never saw me, and just keep walking passed. The only thing that fixes it is if I can get an auto-attack on them, but even then sometimes they just keep going down the lane.

This happens about once every 5 games or so.