Placing the texture at -16 with width 16 means it is not used. At most -14 may be used (0 indexed, I believe) if you want to retain 2x2 pixels.
Reviewed-on: VoxeLibre/VoxeLibre#4624
Reviewed-by: the-real-herowl <the-real-herowl@noreply.git.minetest.land>
Co-authored-by: kno10 <kno10@noreply.git.minetest.land>
Co-committed-by: kno10 <kno10@noreply.git.minetest.land>