Z-fighting inside scaffolding

Summary:
Inside the scaffolding (in the support element), z-fighting occur from the underside. There are no z-fighting on the top side, so it seems to me that this can be fixed.

Steps to Reproduce:

1. Place the scaffolding two blocks high.
2. Enter the scaffolding beam carefully.
3. Look down and up inside the beam.

Observed Results:
There will be no z-fighting at the top, but there will be below.

Expected Results:
Z-fighting should not be from the bottom, not from the top.

Video:
Minecraft 2021-03-13 18-53-25.mp4

Image:
Top

Bottom