Board Thread:Support Requests - Getting Technical/@comment-27153373-20180708054020/@comment-168424-20180709191934

I believe that strangely, MediaWiki can't natively scale SVGs when rendering (which is stupid because the whole point of SVGs is for scaling). It needs to render it to a fixed sized PNG and then scale it or render it as a scaled PNG. Even when it works right there are quirks and compatibility issues. Still, this is probably a bug. Showing black just seems bad and and hard to justify.

See Wikipedia:SVG help and Help:SVG.