By placing a stained glass beside a ladder or slab are appearing various traits of the two textures in one plane doing these traits to move to the floor of the player.

What is expected to happen: The colors of the glass slab and mingle and create a new color.
What happened:The colors do not blend creating several traits with the two colors that move in the same plane

Pictures:

Picture 1: Traits present in tinted glass and stairs
Picture 2: This does not happen in normal glasses and entire blocks
Picture 3: There are no traces in normal glasses
Picture 4: Top view