Sculk shrieker and sculk sensor don't turn the grass block below into dirt

The sculk shrieker and sculk sensor don't turn the grass block below into dirt, which should be as these blocks cover the entire grass block below it.

How to Reproduce

1. Place grass blocks
2. Place sculk shrieker and sculk sensor above
3. Speed the random tick speed up

Observed Result
The grass block below those block doesn't turn into dirt

Expected Result
The grass block below those block turns into dirt