I am hosting a (vanilla) minecraft server, and as long as a user is in the server, I see the error message

Netty Epoll Server IO #2/WARN: Unexpected exception in the selector loop.
io.netty.channel.unix.Errors$NativeIoException: epoll_wait(..) failed: Function not implemented 

being logged once per second or so.

This was supposedly fixed as part of MC-252683, but downloading the latest server jar from here still is using the broken netty version. (4.1.76Final, as opposed to 4.1.77).

Does the download at that URL need changing? And is there another place I can track down a server jar that has the fix applied?