Please look into the matter. When I paste external images to Photo and then try exporting to PDF the PDF contains gray lines bordering those images. In one instance, I copied an excel table as a picture, rasterized it and then used auto contrast which removed the box around the text. But when exporting to PDF it shows those box lines. What I did was to first export it as a high res tiff and then print to pdf. However, the developers need to work on this issue as not everyone will like to export is to tiff and then convert to pdf especially for large size files or doing multiple files at once.
