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MC-236621

Liquids sometimes do not propagate

When placing torches or removing/placing water with bucket, sometimes adjacent water source block will not fill the block. Placing block next to source do not update it. Reloading world or sometimes crossing chunk border will update it somehow. Lava also affected.

Linked issues

MC-236627 Lava not updating Resolved MC-236691 Water does not flow Resolved MC-236724 water is frozen in the air for a few seconds before it starts flowing Resolved MC-236762 Water generates floating above caves Resolved MC-236811 Fluids aren't flowing Resolved

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Comments 9

While playing on Minecraft 21w37a, I have noticed a similar bug related to this one. At first I wanted to report that bug, but then it may end up being a duplicate of this one. All liquids (ie. both water and lava) seem to have completely stopped flowing, regardless of whever they were placed from buckets or generated by the world generator. When a new world is created, the generated water and lava do not flow either. Placing and breaking blocks next to them does not seem to be making them flow either.

Updated title to say liquids.

I think its somewhat dependent on the height at which you are placing the flowing block. I checked several times and found that below y=0 most of the time they are not updating. But when I am placing the block close to the surface it is flowing and also updating as I go on digging till bedrock.

Can confirm - however it won't update no matter where I place the water bucket

I've observed the same issue: Despite confirming that the internal server is running at 20 TPS, liquids will cease propagating for no evident reason. Applying block updates doesn't resolve the issue

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I can confirm that trying to update the water block sources doesn't do anything.

Seed: -4202501077008224237 (you can see the images too)

Coordinates on the image, though it's literally near where I spawned.

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Przemysław

(Unassigned)

Community Consensus

Very Important

World generation

21w37a

21w38a

Retrieved