Player's feet sink into the ground very slightly when standing

The bug

The player is positioned slightly too low in the default standing pose, causing their feet to intersect blocks below them.

How to reproduce

1. Create a platform of glass

2. Place a pressure plate on top

3. Go into third person and view the setup from the bottom while standing on the pressure plate

Expected results

The bottom of the player's feet would not be visible.

Actual results

They are.

Further notes

This only appears to happen with player skins which use the second layer on legs. Disabling this layer (or not using it) does not show this issue.