Sprinting/falling on any of the following blocks will result in the particles of the block beneath being shown instead. I'll periodically update the list if I find new ones or have missed any blocks.

Affected blocks (some may be missing):

• Carpets including moss
• Sculk vein
• Trapdoors
• Glow lichen
• All rail variants
• 1-2 layers of snow
• Lilly pads
• Comparators and repeaters

Steps to reproduce:

1. Select one of the affected blocks from the list above.
2. Place it down and run/sprint over it.
3. Try falling on it too.

Observed results:
The particles produced when falling or sprinting on these blocks will always be from the block directly below. If a block such as a trapdoor is floating in the air, it won't produce any particles whatsoever when you sprint/fall on it, as the block directly below is non-existent.

Expected results:
All the aforementioned blocks should display their corresponding particles, not the ones from the block below.