Short dry grass and tall dry grass aren't randomly offset, unlike similar blocks

The Bug:

Short dry grass and tall dry grass aren't randomly offset, unlike similar blocks.

Steps to Reproduce:

1. Place down a line of short grass and a line of short dry grass.
2. Observe the difference positions of the two blocks.

Observed Behavior:

Short dry grass and tall dry grass aren't randomly offset.

Expected Behavior:

Short dry grass and tall dry grass would be randomly offset.