Fake blocks appear on the client

[Looter-source]

Sometimes when you go all down, there's this weird visual blocks where you can mine thru visual bedrock and no1 else sees it but sometimes it happens to different people too.

I just received this report by a player and this is the video (gif) he added in #bug-issues

[ghost]

I have the same problem Can this be solved? @Yeregorix

Video: https://gyazo.com/5b61c20355242c491c2586f94724717e

[Yeregorix]

I will take a look as soon as possible! Since when this issue is happening? Also, can you both send me logs?

[ghost]

Not sure if it is this

[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at java.io.RandomAccessFile.length(Native Method)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at net.minecraft.world.chunk.storage.RegionFile.func_76706_a(RegionFile.java:279)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at net.minecraft.world.chunk.storage.RegionFile$ChunkBuffer.close(RegionFile.java:361)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:241)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at java.io.FilterOutputStream.close(FilterOutputStream.java:159)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at java.io.FilterOutputStream.close(FilterOutputStream.java:159)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at net.smoofyuniverse.mirage.impl.network.NetworkWorld.saveToCache(NetworkWorld.java:328)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at net.smoofyuniverse.mirage.impl.network.NetworkWorld.savePendingChunk(NetworkWorld.java:316)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at net.minecraft.world.chunk.storage.AnvilChunkLoader.handler$bbm000$onWriteChunkData(AnvilChunkLoader.java:1777)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_183013_b(AnvilChunkLoader.java:244)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_75814_c(AnvilChunkLoader.java:1470)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at net.minecraft.world.storage.ThreadedFileIOBase.func_75736_b(SourceFile:37)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at net.minecraft.world.storage.ThreadedFileIOBase.run(SourceFile:30)
[17:26:25] [File IO Thread/INFO] [STDERR]: [net.minecraft.world.chunk.storage.RegionFile:func_76706_a:298]:     at java.lang.Thread.run(Thread.java:748)```

Except for visualproblems, everything else is fine

[Looter-source]

It happens in many versions of mirages, I never understand why so many people haven't reported it yet, haha. I think it's because no one really has a github account yet, which is why there aren't as many problem reports. Maybe you should open a Discord @Yeregorix server which helps a lot. I could definitely also moderate the chat for you if possible 👍

[Looter-source]

This is me doing it, but it doesn't give any errors in the console Also don't mind the big error above, that's just spam happening by DayCare plugin.

[Yeregorix]

I will think about Discord when I get the time, for now I will focus on this issue.

[Yeregorix]

I did few simple tests on naturally generated ores and bedrock on both SF 7.2.2 and SF latest and the issue didn't happened. Are you experiencing the issue constantly and for all ores/bedrock or just sometimes or under specific circumstances? Also, it might be specific to your installation. If someone can send me an archive with a minimal server setup that has this issue it would help me a lot to reproduce it. An archive containing mods jars and configs is generally sufficient but I can't guarantee anything before I can reproduce the issue on my side. Being able to reproduce the issue is the first step for me to be able to fix it.

Edit: Don't hesitate to send me the archive in private if you care about privacy (on Sponge's forums for example, or on Discord).

[Looter-source]

What's your discord username. Can you send me that private on github.

[Yeregorix]

There is no PM on Github, that's why I suggested other options. Just go to Sponge's forums or Sponge's discord and you will find me.

[Yeregorix]

I succeeded to reproduce the issue on my side on both SpongeForge and SpongeVanilla 🙂. It sounds like a server/client desynchronization as the issue disappear when the player disconnect then reconnect. I've also found that the issue happens in chunk containers (16x16x16). I keep investigating.

[Yeregorix]

I'm getting busy these days, I keep working on this issue but it will take longer than expected.

[Looter-source]

I really look forward for it, when it get's fixed :D

[Yeregorix]

I think I finally found what's causing this issue. When a internal container resizes his palette it causes a full deobfuscation of the network container without sending updates to the client. I will work on a fix soon. 🙂