The bug

When ice/snow melts, sculk sensors nearby don't detect this, although it could be considered a vibration.

How to reproduce

1. Recreate the setup shown in setup.png
2. Replace all diamond blocks in the setup with glowstone so that the ice begins to melt:

   /fill ~9 ~-4 ~9 ~-9 ~9 ~-9 minecraft:glowstone replace minecraft:diamond_block

   When the ice melts, the sculk sensor is not activated

Expected behavior

The sculk sensor would be activated when the ice (or snow) melted.

Code analysis

Code analysis by Avoma can be found in this comment.