It is possible to get gravity blocks that keep bobbing up and down on the big dripleaves powered by Redstone. This is also inconsistent with Java Edition.

Steps to Reproduce:

1. Get a big dripleaf.
2. Get a lever, and place it next to the big dripleaf.
3. Power the lever on.
4. Place a gravity block like sand on the dripleaf.
   

Expected Results:

Gravity blocks will not bob up and down when on big dripleaves powered by Redstone.

Observed Results:

Gravity blocks will bob up and down when on big dripleaves powered by Redstone.

Notes:

I put a glowstone lamp under the lever to let people know the lever is on.