Recently there is a problem, that in editor of Proofreads for scan images are set to the style "width: 100px;", which flattened them vertically. Screenshot. Page example.
The bug is not stable. Another user reports that the images are first loaded flattened, but after 1 second they reboot to normal. This does not happens for me. After manual reloading the page, the width changes to 773px and seems normal.
Perhaps somewhere a typo: "100px" instead of "100%"?