As you can see in the video below, on the last zombie I killed, 6 total shots were fired but only 3 of those 6 registered as hits and did damage. It seems to be happening on every gun but I haven't tested each individually.

(Video is inside of the ZIP, couldn't upload the MP4 itself)
2020-11-11 19-06-28.zip

This is also tested only on Zombies as seen in the video, not sure if it applies to players but still worth looking into and fixing :)

Fixed in df4762b