When loading Smart Inserters, I see this kind of warning for all technologies:
4.213 Warning! Sprite at {0,0; 256x256} from Smart_Inserters/graphics/technology/unlock_all_diagonals.png is defined with 4 mipmap levels, but level 1 is expected to be at {256,0; 128x128} which is out of bounds of the source image.
