Snow currently accumulates on some types of ice. It should not form on any kind of ice.
Sidenote: It is OK that snow accumulates on transparent blocks.
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Can confirm in 1.18 Pre-release 1. However, this should be intended for blue ice according to MC-128471.
Can confirm in 1.19 Pre-release 2.
Potential Fix:
The following is based on a decompiled version of Minecraft 1.19 Pre-release 2 using Mojang mappings.
Within the BlockTagsProvider.java class simply adding both blue ice and frosted ice to the SNOW_LAYER_CANNOT_SURVIVE_ON block tag would resolve this issue. The correct line of code within its class should look something like the following:
net.minecraft.data.tags.BlockTagsProvider.java
public class BlockTagsProvider extends TagsProvider<Block> {
...
@Override
protected void addTags() {
... this.tag(BlockTags.SNOW_LAYER_CANNOT_SURVIVE_ON).add(Blocks.ICE).add(Blocks.PACKED_ICE).add(Blocks.BLUE_ICE).add(Blocks.FROSTED_ICE).add(Blocks.BARRIER);
...
Can confirm. Just to clarify, snow does not form on ice or packed ice, however, it does form on frosted ice and blue ice. I've attached a screenshot along with a video demonstrating this behavior.
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