A different view in the texture mode as in the material- or rendered mode.

I´ve created forexercise a basic cube, an imagetexture on it and three decals. Now Iwonder why
in the viewport thetexture mode appears quite different than in the material- orrendermode.


decals probe a.blend (279 KB)

Oops, went out of control. My question is, is this correct or whether my UV map somehow wrong or my nodes then?
Be patient I´m not so experienced on this.

Well well well, no textures included. Here is the thumbnail of rendered object. I hope it helps to understand the issue.