The bug

MC-91893 has been fixed but some subtitles are still missing for some sounds.

Affected sounds

• Music playing (Background music (Intended?) and records)
• Elytra flying (item.elytra.flying)
• Moving minecart
• Polar bear footsteps (entity.polar_bear.step) (expected subtitles.block.generic.footsteps)
• Cat purring

Sounds added in 1.13 snapshots:

• Underwater ambient sounds

Sounds added in 1.14 snapshots:

• Loom sounds
  • ui.loom.select_pattern
  • ui.loom.take_result

• Stonecutter sounds
  • ui.stonecutter.select_recipe
  • ui.stonecutter.take_result

• Cartography Table sounds
  • ui.cartography_table.take_result

Unused sound events:

• entity.wolf.howl
• block.BLOCK.fall (affects all block.xxx.fall events)
• entity.player.breath