Sand glitches up and down instead of breaking when falling on entities

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It’s not clear what you expect to happen and why. In the setup shown in the picture the sand would not break without the boat there. Are you expecting that the boat would cause the sand to break? If so, why?

in java edition if you place sand on a boat the sand breaks instead of glitching up and down

Still an issue in 1.19.70.26 Preview

However Suspicious sand and gravel does break through but they still not break normal sand and gravel in 1.20.0.21 Preview 

The boat and the anvil should stay stable, or at the very least, the entity should break down and revert back to being an item.

Affects 1.20.10.23

When sand falls into the boat, there is a risk of it turning black. 

Affects 1.20.20.20

When the boat is on land and an entity block falls on it, the block remains and the boat turns black

Affects 1.20.30.22 preview and 1.20.15 hotfix

Reply from @unknown:
Please do not add more "Affects..." comments as it just clutters the report and hides information.
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Affects 1.20.40.20 preview