When i trace the provided image (which contains an A4 page) after selecting the correct page boundry, i receive a shape of my safety goggles. However, when creating a bin for it, the resulting shape fits within a 2*1 bin (which is way to small for safety goggles). This only changes, when i provide a cropped image, with dimensions nearer to the page size. It looks like the scaling is somehow based on image dimensions, not the selected a4 paper shape?

I tested on latest dev.

Image