Question Local Difficulty and Day Count missing

[Alex9303]

EDIT 1:
THIS IS NOT A PAPER ISSUE. This issue also exists with the vanilla Minecraft server jar on Mojang's site. The vanilla screenshot was taken in a singleplayer world and not in a server.

Original Post:
On Paper servers, the Local Difficulty and Day Count just shows '??'. Is there any way I can fix this? I've looked for other threads and Google and haven't really found much info about it. It would be nice to see the day count on my server.
Below is a vanilla server vs a paper server on the same seed:

https://imgur.com/a/2bK3xQy

https://imgur.com/a/4JGEDiI

 

[Warrior]

Was the picture from vanilla made on an actual vanilla server or in singleplayer? I have a vanilla server where I'm also not able to see the day count, the first post I could fine online about it mention that loading the same world in singleplayer does still show it.

 

[Alex9303]

You're right. The vanilla screenshot was taken in a singleplayer world. I didn't think that would change anything but it actually does. I downloaded the official server jar from Mojang's site and the Local Difficulty and Day Count doesn't show up there either. Meaning that this is not a Paper issue. My bad.
Here is a screenshot from the actual vanilla server:

https://imgur.com/a/lfySBWy

 

[electronicboy]

That calculation relies on information that isn't sent to the client. It was wrong for years, and Mojang just opted to remove it in a past update