They are the ones that occur in mirrored pages. https://mdwiki.org/wiki/Canada

Including screenshots for comparisons of where it happens and doesn't happen. The screenshots in Vector22 are Wikipedia, the oldschool Vector screenshots are MDWiki.

To summarize, it seems to happen only with most image calls. It is not affecting template styles. And, for some reason, SOME image calls still work right.

In T355726#9560716, @Harej wrote:

And, for some reason, SOME image calls still work right.

Turns out to not be a true image call but a template. Which is consistent with templates working and image styles not working.

Filed bug report https://github.com/SkizNet/mediawiki-WikiMirror/issues/16

With the update that Ryan just did this is mostly fixed. Just a few like this that are not formatted properly