April 10th, 2024 - Server updated to version 2.30gApril 2nd, 2024 - Server updated to version 2.30fMarch 20th, 2024 - Server updated to version 2.30e
Gamespy dropped the server list hosting years back, so it's not a bug at all. You'll have to gain entry into a server directly with it's IP.
I remember when the master server was taken down and the passwords stopped working. But for a long time after that the server list would still populate. Or at least, it did for me for a long time afterwards