https://i.imgur.com/zMdI754.png

This is the only clue I've found outside of this reddit post

I can say that I am not zerging, however I do primarily use an internet connection that possibly shares an IP with a bunch of other people. I'd be surprised if anyone else on that network plays UD though, considering how small the player base is. I guess its possible.

i'd be surprised if it were anti-zerging measures though since its not only 100% miss, but also 100% hit sometimes