Created a “project” in Photos.app with 31 JPG images. Then I made four copies of the last image with credits edited onto it. I imported those into photos, added them to the project, and moved them to the end.
The project is set “scale to fit screen” and the first 30 are all fine. But on the last five, it cropped a significant amount of each side, hiding some of the credits with black framing. The four and the one they are copied from are all the same dimensions, 640×393. The other images, all showing completely, vary from much larger to much smaller.
In the app, before export, they all look fine.
What can make the last five display incorrectly, and how can it be fixed?