Non-solid blocks like Hoppers, Slabs, and Kelp make no sound when placed in water. They do when placed on land. I am only using a classic texture pack, which does not affect sounds.
Steps to reproduce:
Place a non-solid block, like a Hopper, in water.
Expected result:
The block makes a sound when placed in water.
Actual result:
The block makes no sound when placed in water.
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