Wall with a glass pane/iron bar/fence on top does not update when the glass pane/iron bar/fence connects to a block

Steps to Reproduce:

1. Place a wall
2. Place a block next to the wall
3. Place a glass pane, fence, or iron bar on top of the wall
4. Place a block on top of the block next to the wall

Observed Results:
The top corner of the wall does not update when the glass pane/fence/iron bar connects to a block.

Expected Results:
The top corner of the wall should update when the glass pane/fence/iron bar connects to a block.

Video:
Minecraft 2020-12-28 12-46-14.mp4

Notes:
As shown in the video above, the wall updates correctly if you break the glass pane/fence/iron bar and replace it.