Last modified: 2012-06-05 17:35:05 UTC
Triggers mixed-content mode warnings at https://commons.wikimedia.org/wiki/Special:UploadWizard in mw.Feedback.js: $( '<img src="http://upload.wikimedia.org/wikipedia/commons/4/42/Loading.gif" />' ) the image should probably be copied locally into the extension and loaded via CSS with a relative path.
There are already other 4 spinners in the extension, and another at phase3/skins/common/images/ajax-loader.gif Why are so many spinners needed?
This isn't an UploadWizard-specific file; it's loaded from outside of the extension. You can find the relevant file at resources/mediawiki/mediawiki.feedback.js.
....and, in the latest, it appears to have been fixed anyway--it's now loaded from a configuration variable, see resources/mediawiki/mediawiki.feedback.css.
Absent other, recent complaints, closing as fixed.