Steps to replicate the issue (include links if applicable):
It gets plenty of results.
What should have happened instead?:
It should also list
https://commons.wikimedia.org/wiki/File:Fence_along_the_Montana%E2%80%93Alberta_border_-_19940726.jpg
but that is totally missing. One wonders what else is missing.
Software version (skip for WMF-hosted wikis like Wikipedia):
Other information (browser name/version, screenshots, etc.):
Maybe too many odd characters in the missing file's URL?