Falling through a Shulker Box as if it were a Trapdoor

Bug Report:
Able to pass through a Shulker Box under certain conditions

Description:
Under specific circumstances, it is possible to fall through a Shulker Box like a Trapdoor.

Steps to Reproduce:

• Dig a hole at least 3 blocks deep (or more).
• Place a Shulker Box at the top of the hole.
• Place 2 solid blocks in front of the hole (not above it).
• Attach a Trapdoor to the 2 blocks, positioned so it covers the top of the hole.
• Walk into the Shulker Box, (the Trapdoor is just above) open Shulker Box, and you will fall through the hole.

Video example:
https://1drv.ms/v/c/3c221185f8df8273/EZm3mznEHRtDmMJrUlnJmW0BZGxy09HSb72eQ9-NRumLEg?e=4cnX3A