Ok, so this took me some time to figure out and it's a real PITA for any server administrator.
I was wondering why my server would just never show up in the server list, unless I enter its name in the server name filter. I did not understand, why the server list would rather display about 60 absolutely empty servers instead of showing all well-frequented servers.
Well, now I know. Take a look at this picture and try to find something interesting.
Every server listed there either is located in the region "Baden-Württemberg" or has no region assigned to it. Note that I don't have any regional filters active and don't live in Baden-Württemberg. In alphabetical order Baden-Württemberg is the first region. My server is located in Bayern, tough luck!
For some reason the server list only shows servers with no region or the first region. I have no idea why this would be intended behaviour so this must be a bug and I am really upset by it.
Here's what I would expect: The server list should show the servers with the most clients of all regions unless I set a regional filter myself.
I hope that this gets fixed quickly, since it really is skewing the competition and can be heavily abused by TS server contractors.
Thanks for listening. I needed a place to vent.
Sorry, if I was a bit to emotional.