When placing sand blocks before they fall, you notice that placing sand blocks quickly doesn't allow hand placing animation to commence.
How to reproduce
Start by obtaining a stack of sand blocks.
Then dig a hole as shown in the video and place 1 block to allow sand blocks to fall when placed.
Start placing sand blocks and you will notice that it skips placing animation from time to time.
Observations: Block placing animation seems to skip when placing sand blocks quickly.
Expectations: That shouldn't happen and it should place the blocks without skipping the animation.
Relates to MC-129112
Related issues
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Comments


@unknown yeah true, but I believe MC-129112 differs from this report and MC-133784, the reason is because if you look at MC-129112 it does mention the same bug/issue, but has completely different steps, and doesn't include gravity affected blocks like sand or gravel so its best if it relates. But I still do agree because it is the same issue. So it could be a duplicate as you mentioned.

Falling blocks are entities.

@unknown Yeah true, but MC-129112 mentions entities as in villagers or golems, which is why I believe it relates rather than duplicates, but I could be wrong.

Falling sand is an entity, so this is the same as MC-129112, even if that bug report doesn't specifically highlight falling sand. Also note that some of the duplicates of MC-129112 already describe this exact issue with falling sand.
(If MC-129112 ends up being fixed but this is still an issue for falling sand, you can of course create a new bug report then, but in the meantime it makes more sense to just track it in one bug report)