To reproduce, set up uBlock Origin with the following dynamic filters (either of the two lines by themselves will trigger the issue):
wikipedia.org * 1p-scripts block wikipedia.org * inline-scripts block
Then go to this page and you will see that non-infobox images are missing. This issue started maybe a month or so ago, I assume that's when lazy-loading went into place. I suspect the issue is that because uBlock is selectively blocking elements of the page rather than blocking all scripts, the browser does not render noscript tags. This occurs on both Firefox Mobile and Chrome for Linux.
I'm not sure of a good mitigation, but it would be a good idea if images loaded automatically on mobile if the "lazy-load" script fails to trigger. I'm not sure if it's possible to modify a page before the image requests are sent out, but possibly it could be done by dynamically changing all image tags to "lazy load" image tags as the page is loading.