Incorrect player number in Multiplayer Menu

I had just opened my own server, and went to play it, when the multiplayer menu said that 100/10 players were online. This is obviously a bug, and it wouldn't even be possible since my servers player limit is 10

What I expected to happen was...:
0/10 players online.

What actually happened was...:
It said there was 100/10 players online.

Steps to Reproduce:
Unknown.