As I was playing, I noticed that certain sounds wouldn't play. The missing sounds I have noticed are punching an anvil, and burning items. However, punching out fire still makes a sound, despite it being the same as burning items.
(I don't know what I would use as a screenshot, this being an audio problem and all)
Related issues
duplicates
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Can confirm the missing anvil sound (Duplicate of MC-11996), but Items make the "hiss" sound when thrown in lava.