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MC-136076

Falling Sand Renders Strangely Underwater in Multiplayer

My friend recently remade our old vanilla server. We imported the old 1.9 world and he tried to optimize it before updating it to 1.13 but it failed. We got it to 1.13 anyways and sand that fell underwater would warp, jitter, and become invisible. We could both see it, and I recorded a video of it(sorry for the weird format I'm not good at video editing). I had been working above ground and sand was fine, and I couldn't replicate it in my single player copy of almost the same world. Since the major difference between my singleplayer world and the server world was the optimization I feel like that's part of the issue. We made a new 1.13 map and sand behaves normally. My singleplayer world had first been updated from 1.9 to 1.12 and then the snapshots and then 1.13.

 

Video demonstrating the issuehttps://www.youtube.com/watch?v=RdsTP4y6VYw

Linked issues

Comments 4

I ran a 1.13 server and cannot confirm this bug.

Video demonstrating the issue clearly shows there is a problem, reopening.

Is this still an issue in Minecraft 1.13.1? If so, can you and your friend please try to updating or reinstalling your graphics card.

We reconfirmed it for 1.13 and confirmed it for 1.13.1, both singleplayer and multiplayer. We tested it in updated old worlds(optimized and unoptimized) and newly generated ones and got it in both. We found that the farther from spawn you are the more pronounced it becomes. At 40,000x 40,000z it's noticable, and at 400,000x 400,00z it's very clear. When you get to coordinates in the millions the effect increases so much that falling sand can stretch to many blocks away and completely slip from vision.

Being underwater has nothing to do with it, in the original video my friend was much farther from spawn than me and I didn't notice the effect where I was. I was around 12k blocks from spawn and my friend was around 77k blocks away. This is most likely not a graphics processing issue, as I no longer have my GPU card and am getting the same results. For reference, I previously had the Nvidia 980ti, and am now using my Inteli7-7700 CPU for graphics. When my GPU failed I checked multiple things in my computer and everything is up to date. My GPU was also automatically updated. My friend has a Mac Pro with the graphics details shown in the debug overlay.

The following videos were recorded by my friend, as without my GPU I have lost my recording software.

https://streamable.com/x32qa 60k
https://streamable.com/jzkcn 100k
https://streamable.com/swx2d 400k
https://streamable.com/r4bei 400k superflat
https://streamable.com/61e0e 900k

Matthew M

(Unassigned)

Unconfirmed

Minecraft 1.13

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