This report relates to MCPE-175017

In bedrock when you try to place a hanging sign under your feet you can while in java you can't, this is also different from the other variant of the sign that allows you to place it. The behavior would be good because part of the sign does not have a collider that would allow the player to pass by not having a collider, while the bar holding the sign would act as a trapdoor that would allow the player to crawl

Steps to reproduce:

1. Place hanging sign next you

Observed Results:
Does not allow you to place the hanging sign on your feet

Expected Results:
It should allow the player to place the hanging sign under their feet like they do in bedrock edition, allowing you to crawl