There are some regressions that have happened within the last month, maybe within the last weekend.
bugzilla886049.pdf: the shapes at the top and at the bottom are different
PDFBOX-1735.pdf: the JPEG2000 image is now at the bottom of the image, before it was 5mm above the border
PDFBOX-1295.pdf: the google chrome icon is missing
PDFBOX-1452.pdf: the yellow question mark is missing