Cannot clear a Post Process Anim Blueprint after assigning one

Cannot clear a Post Process Anim Blueprint after assigning one

1. Open any skeletal mesh component
2. Find the "Post Process Anim Blueprint" field in the details panel
3. Assign an AnimBP
4. Click the dropdown and select "Clear"

Result: Nothing happens
Expected: The assigned AnimBP is cleared from the field

Post Process Anim Blueprint cannot be cleared

4.14 bugs with animation features