Bump doesn`t work without blurring the bitmap

[pixela]

01-Global_Off_FilterNONE_Blur=1



01-Global_Off_FilterNONE_Blur=0.01





01-Global_Off_FilterNONE_Blur=0.5

As you both described when we make the blur value down to 0, bump effect gets lost.
But I haven't scene ANY filtering change in diffuse slot at all in whatever setting I had.

[PIXELBOX_SRO]

yep, i ve had this problem for ages ...thas why i always use 0.1 - 0.3 for any bump map...otherwise its not visible if you go to 0.01...which is weird