Can confirm on 1.21.4
I visited 5 and they were all like this, I think this isn't just a matter of luck with world gen...
Updated description to include steps to reproduce, a more detailed description including expected vs observed results. Also attached additional images showing the difference up close for the 3 block displays found to be affected so far
Still an issue in 1.20.4
Can confirm in 1.20.3 rc 1
Can confirm on 1.21.4. Stumbled across it while working with commands