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:
Select one of the affected blocks from the list above.
Place it down and run/sprint over it.
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.
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Reopened since the equivalent Java report is considered a valid bug.