Issue: When a player is refused by the subserver for some reason
( for example, refused by Authme, for using an illegal username),
The subserver's console can display the right message.
but bungeecord can't get the right reason for "lost connection". It just displays "could not connect to a default or fallback server".
This caused my players to be unable to know the specific reason why they were disconnected. Everyone thought that the server had not been started yet.
I have developed a plugin to verify some user information, and use the disallow method ( I have also tried player.kick method to deny players who do not meet the requirements to enter. BungeeCord also cannot obtain this information. Only the console of the subserver can correctly output the reason for the disconnection.