Transparent item pipes do not render items inside them on servers.

[ProbablyMute]

Issue description

It seems that, on multiplayer servers only, items do not render when moving inside item pipes during transfer.
Several others have noted this on the discord.
Amount of items, and pipe length (20+ attempted), do not seem to matter.

(When discussing this issue on discord, others have noted what is potentially a seperate rendering issue, that the moving items render "at lower framerate" and may not visible if the pipe is not long enough to give opportunity for a frame to render? I'm only noting this here to prevent the two issues becoming confused if they are seperate, as they appear similar.)

Steps to reproduce

1. Be on a multiplayer server.
2. Try to move items with transparent item pipes.
3. Notice items not rendering as they move in pipes.
   (The items do transfer correctly, just don't visually render.)

Minecraft version

1.21.1 (Latest)

Platform

Neoforge

Loader version

21.1.219

Oritech version

1.0.0

Other relevant versions

ATM10 v5.5.
Someone on discord who also had this issue was playing the Oceanblock(?) modpack, so it is not ATM10 specific, and I don't know what loader that uses, so it may not be NeoForge specific.

If a (crash)log is relevant for this issue, link it here: (It's almost always relevant)

No response

[MrAmericanMike]

So just running locally fabric-server-mc.1.21.1-loader.0.18.4-launcher.1.1.1 With Oritech and it's dependencies, the items in the pipes render perfect.

Hopefully I'll have time to start adding one by one or by batches the same mods I have on the server I noticed the issues and report back if I find at what point things break.

PS: Will also try a new World on the same host I'm running the server where I also noticed the issue.

[MrAmericanMike]

Ok so I did a series of Tests and looks like it's a very "edge case scenario" I tried Oritech by itself both locally (Running a server on my PC) and a on Raspberry server which I then access with a duckdns address. And in both cases things run perfectly.

The server where I had issues is on this Raspberry, so I created a new instance here and installed all the same mods I have on the server with the issues.

After creating a new world with the exact same seed, pipes work perfectly.

Then I decided to copy over the world from the original server with the rendering problems, to the folder of this new instance created to test, and yes, the rendering issue is still there.

I'm guessing something on this world is the issue, but I have no idea what could the cause be. I tried away from spawn, I tried in The End dimension and still.