When you first open the server browser, the header shows the list as sorted by ascending ping (up arrow next to the bars icon). However the server list itself is not actually sorted in any logical way I could figure.
If you click on any item on the header, the list will sort itself as expected, But if you hit refresh after re-sorting the list, it will revert to its “default” sort order (all mixed up as it was when you first opened the page). That makes refreshing really annoying as the list keeps reshuffling itself in a meaningless manner.
Also, if you select a server that is populated but still in the lobby, the player list does not update, it shows the player list from the last server you checked out.
The problem doesn’t occur with empty lobbies (these correctly show an empty player list) or servers currently running a map, only servers with players sitting in the lobby.