Beds renders white on the side where the second part should be

DelimanCZ please don't update reports that have been resolved as won't fix. They aren't considered valid bugs anymore.

Isn't this intended to be the mattress of the bed?

You would expect it to be like the 1.14.4 screenshot. Normally if you have a full 1x2 bed you can see through to the other side from the bottom. They probably resolved as Won't Fix because you normally do not expect to have a 1x1 bed piece.

Why is this Won't Fix? Can an explanation please be provided? This also affects custom textures that use transparency elsewhere, and has broken one of my resource packs.

@unknown yes, but they rather kick me from this issue, than fix this simple problem...