The main CSS has rules for external link icons based on recognizing URI schemes. For example, the http://bits.wikimedia.org/en.wikipedia.org/load.php?debug=true&lang=en&modules=ext.wikihiero%7Cmediawiki.legacy.commonPrint%2Cshared%7Cskins.vector&only=styles&skin=vector&* main Vector CSS has a rule for news:// so that it creates a link and an icon.
As I see it, per RfC 5538, the URI scheme can be either news:// or news:but the latter is not supported by the CSS. Looks to me like the CSS should be updated to support news: which would support both schemes.
Version: 1.18.x
Severity: minor