Since sometime in the 1.0 beta (not sure exactly when) the server list now refuses to show any greater than 5 players no matter what is reported in the pong from the server. Anything less than 5 is reported correctly. My server could for example be hosting 7/10 players and the server list would claim the server is full with 5/5 players.

Tested this with some custom servers and also by using Wireshark on a Realms server (which allows 10 players) to identify the IP and port, adding that to the server list and pinging it. This issue affects all servers, custom and vanilla.

Bearing in mind that this hasn't been tested with a vanilla 1.0 server (since there aren't any yet), however I have verified the format of the pings/pongs and ensured that the content has not changed since 0.16.0. Also worth noting that all other fields display correctly.