Redstone dust and lily pads only just barely float off of their supporting block

21w03a adds glow lichen, which very tightly adheres to the face of the block it's on. Compared to redstone dust and lily pads, this is also likely how tight they should hold on to their block space, but some closer inspection reveals a gap.

How to fix

The resource pack attached to MC-237445 fixes this issue completely, alongside fixing multiple other issues with flat plane models.