See https://www.mediawiki.org/wiki/Requests_for_comment/Square_bounding_boxes for context.
If the user doesn't specify an explicit size for the thumbnail, we should scale to a square bounding box so that portrait aspect-ratio images look the same visual size as landscape aspect-ratio images.
Version: unspecified
Severity: normal
URL: https://www.mediawiki.org/wiki/Requests_for_comment/Square_bounding_boxes
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=63904