Debug menu doesn't show Multi Noise, Biome Builder, and Terrain lines in Multiplayer

Invalid due to modded client. If you can reproduce in vanilla, then this issue will be considered.

Yeah I just realized, testing now.

It's reproduceable in vanilla. I added new screenshots.

It's still a bug regardless of optifine.

Can someone say why this is the way it is supposed to work?

Probably because the client has no use knowing that information, unlike in singleplayer, where client and server are one and the same.

Sending it all the time would be a waste of bandwith