I thought I'd make a topic on this because I've already seen a couple of people do this:

https://gtm.steamproxy.vip/ugc/87098596241811049/A42A94B57A2277F76AD787E53ABC163700236A7D/

The reason this happens is because the Local Players option on the top of the Public Lobbies is set to 4.

https://gtm.steamproxy.vip/ugc/87098596241779665/D5B25159B93FCB1160F4EEDC1CD60E5E0B63C3F1/

Here it is set to 1 and that's how it should remain.

As nice as it may seem to get a freebie kill (LOL!), it can ruin the fairness of a match. Of course, it's harder for the player to see.

To any new players of the multiplayer on here, keep that in mind and leave the value set as 1. Especially if you're the only person playing on your computer.

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With that being said, enjoy the multiplayer and hopefully this helps anyone who has accidentally changed this option.