Bukkit

Examine cases where gravity block dependencies occur. They are currently detected and replaced, but the fallen block remains post restoration. One important case is where an anvil crushes blocks beneath it when it falls. The gravity block should be removed with it's batch, or a downward seek should occur to replace what was beneath the gravity block on restoration.

Caveat: If a downward seek is performed, ensure that it works for cases where stacks of gravity blocks are falling.