Bug: Text on Hanging signs only display on one side.

Expected: same text on both sides as inferred at Minecon Live 2022:

https://youtu.be/yZRXmHiEh7U?t=499

Current State:

A double hanging sign would look weird in this example:

If this is closed as "works as intended" or "won't fix" then the demonstration above was misleading to the player base