This is hardcore. How were the boxes made? Which version of Max did you use? Here are my notes:
-indeed something is wrong with CBitmap's bump
-it works fine if you instance the map from bump to diffuse
-it becomes visible if you change filtering blur to 0,1 but it is still blurry
-if you set blur to 0 strange things happen
-it works fine if you use standard Bitmap node
-checked with png and jpg - same thing
-now something strange: if I create a new box, sphere, whatever, I am getting the correct result
update: forgot to attach the scene