Shulker boxes can open when blocked by Big Dripleaf

The Bug

When the Big Dripleaf is on top of a shulker box (no matter the angle), it can still be opened.

Steps to Reproduce:

1. Place down a shulker box facing upwards.
2. Place down a big dripleaf on top of the shulker box.
3. Attempt to open the shulker box.
   → Notice how shulker boxes can be opened when blocked by big dripleaves.

Expected Behavior:

The expected behavior would be that shulker boxes cannot be opened when blocked by big dripleaves.