1.17 server.jar NOT working

Hey, I have realised that the server.jar's from 1.17 pre-realease 1 upwards are not working, when used, it just says "Can't Connect to Server". Take it to any snapshot previous of the pre-releases it works just fine. Also there is no crash in crash log and I can connect via SSH (I use Linux as a minecraft server adn connect from Windows OS).

Is this happening to anyone else or is this just me?