As of MW 1.38+ the MediaWiki software is bundled with a new skin, vector-2022, which matches the skin currently in use on this wiki and anything hosted by Wikimedia (including Wikipedia), Miraheze and a few others.
That skin splits $wgLogo into multiple logos so that the icon, site name (wordmark) and tagline are three separate files, like:
- the puzzle globe en.wikipedia.org/static/images/icons/wikipedia.png
- the "Wikipedia" wordmark: en.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg
- "the free encyclopedia" tagline: en.wikipedia.org/static/images/mobile/copyright/wikipedia-tagline-en.svg
That's going to be a problem for this extension, as LogoFunctions is expecting to override one file with the logo and there are now actually three smaller images (plus some variants for SVG versions, or higher-resolution versions of the same PNG content) which must be set. I see no way to do that with this extension.