This bug is a parity issue. When you see the water/lava drips from the pointed dripstones, it doesn't produce any sound.
How to Reproduce
1. Place a water/lava source.
2. Place pointed dripstones downwards below the block below water/lava source.
2. Pay attention to the sound when the water/lava drips.
Heard Results
It doesn't produce any dripping sound.
Expected Results
It should produce dripping sound like Java.
Beta 1.16.220.50 added new dripstone sounds, but somehow it still doesn't produce dripping sounds, despite the sound file for dripping is already there.