Strange blurred texture when using tW instead of tWVP in shader

Hello. I’m trying to avoid using of UniformScale = 2 on every my shader, that just process texture. So i’m multiplying Pos.xy by 2 to get a properly scaled quad. But i found, that quad scaled this way always have a little bit blurred texture on it, also this bug appears if i using only WORLD transformation matrix instead of default WORLDVIEWPROJECTION. Looks like Renderer(EX9) always have little VIEWPROJECTION transformation on it.

I attached a simple testcase to describe this problem. (43.9 kB)