I found 7.1.3 adds some chopped pixels to right edge for images in portrait (vertical) mode when long edge is specified to a number larger than 950 px. Oddly, if the image is rotated to landscape (horizontal), it doesn't mess up the output. I have tried to complete uninstall, reboot, and reinstall, also created fresh output receipts. But, the issue is there. I'll appreciate if you can suggest some ideas.
portrait mode jpg output and the issue shows up on the right edge.
landscape mode jpg output and the issue is gone.