Why can random people join friends only games?

[Spar10]

It's a consistent problem. Me and my friends will try to run some VS or a campaign, and some rando that none of us have added will join out of nowhere. Or multiple randoms, if we're playing VS. We even check after the game is over and the game says 'friends-only lobby' despite being full of non-friends.

What gives?

[JAiZ]

Friends-only lobbies still show up in the server browser and can be joined without restriction.
You'll want to use the "private" option instead.

[Junior]

use the private option as said above.

the options are not exactly saying exactly what they do.

public: people can see in the game menus, and in the all server list.
Friends only: péople can't see it in the game menus if they are not friend of the host or anyone connected, however the server still show up in the all servers list.
Private: its more like invite only don't show to friends, and don't show up in the all server list.

this is probally a mistake in the game programming in my opnion as the friends only should have not show in the server list at all.