Falling blocks don't land smoothly since 21w17a

The bug

In 21w16a and earlier, falling blocks like sand fell smoothly and seamlessly as they landed to turn into blocks. Watch the video:
Video_2023-11-09_22-24-21.mp4

After 21w17a and ever since, falling blocks snap to the ground in a pretty jittery fashion, which doesn't look as good:
Video_2023-11-09_22-25-47.mp4