The Bug

FallingBlock entities such as sand and gravel can occasionally glitch when blown by a wind charge while bobbing on a bubble column. This is most likely a client-server desync glitch.

Rejoining the world fixes the issue.

How to Reproduce

Note: This could take multiple attempts to reproduce successfully.

1. Dig a hole around 5 blocks deep, and place soul sand at the bottom. Fill the hole with water so that each block is a source block. If done correctly, bubble particles should show at the top.
2. Place a gravity-affected block such as sand into the topmost water source block. It should start bobbing on the water.
3. Using wind charges, shoot at the FallingBlock entity.
4. Note how sometimes, the entity will glitch.

Additional Notes

Related to MC-139548.