Fill Replace command not working properly with leaves or rotatable blocks.

When using the fill command with sub command replace, rotatable blocks like leaves do not get filled correctly in a command block.

Steps to replicate:

1. Place down a command block and write, for example, /fill x y z x1 y1 z1 air 0 replace leaves2 1.
2. In the selected area, place down Dark Oak Leaves.
3. After placing a button or similar, activate it.

Observed result:

1. Only a small portion of blocks are replaced, and these blocks all seem to have a similar rotation.

Expected result:

1. All blocks in the selected area should be replaced with air.

Notes:

• This only occurs in command blocks.
• I am unsure whether this affects all leaf blocks.