Summary:
If you place a cushion on any full block, destroy that block, and immediately replace it with lava or water (including flowing lava/water), the cushion will not break. Instead, it remains floating as if there is still a solid block underneath it. Cushions should not treat water or lava as a valid support block and should break. This behavior differs from the Java Edition, creating a parity gap.
Steps to reproduce:
Place any full block.
Place a cushion on top of it.
Break the full block and immediately place lava or water in its place.
Wait for about 10 seconds.
Observed result:
The cushion never breaks and remains floating on top of the water/lava.
Expected result:
The cushion should break a couple of seconds after the full block is destroyed, just as it would if it were left float in the air.
Screenshots:
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