Farmland does not update to dirt once a carpet has been placed directly on top of it

Brief Description:
Farmland does not update to dirt once carpet has been placed directly on top of it.

Steps to Reproduce:

1. Place some farmland.
2. Place carpet directly above it.
3. You will notice the farmland doesn't update to a dirt block like it should do when a block is placed directly above it.

Observed Results:
The farmland doesn't update and remains the same once a carpet has been placed directly above it.

Expected Results:
The farmland should turn to dirt as there is a block placed above it.

Screenshots/Videos:
I've attached one image which shows how nothing happens when carpet is placed directly above farmland.

Notes:

This works with any color of carpet.