At this page https://www.minecraft.net/de-de/download/server

you can see the server JAR file having the file name

minecraft_server..jar

previously, there was a version between the two dots, for example minecraft_server.1.19.3.jar

The version was either removed intentionally (then the bug is that there are two dots) or the version is not showing because of a bug. I cannot tell.

For me personally it would be great if the version would show again, because I have a Nagios monitoring tool that checks if Minecraft is up-to-date, and it requires that there is a version between these two dots.