Transparent stained clay and wool blocks when in f5 mode

i would put a clay block in my hand in the game and then in f5 mode the block was transparent on at least two sides

What I expected to happen was...:
the clay block should have been solid with a texture on each side

What actually happened was...:
the block had no texture and was transparent on at least two sides

Steps to Reproduce:
1. put a clay block into the hotbar
2. put that clay block in your hand
3. click f5 twice to change the camera
4. look at the clay block and at least one of the sides should be transparent (works best with light colored blocks)/