Yes, it is a strange thing. Probably there is something wrong with the material it self. In one of the courses, I think, it was where the painting was starting, you showed there, how to switch to GLSL view and remove shading, but I didnt had there that option. So I meddled with the settings on material a bit, and probably I created the material in cycles render and only after that switched to blender render (if you enable/disable the “enable nodes” option in materials, it lets you to switch shading on/off).
Also when I put this material to unity, all slots were grayed out and inaccessible, so I created new material there as well (using presets I already had).
Looks like I need to create that material again in blender and correct the mistakes.