Following wiki code:
[news://comp.lang.apl my_newsgroup]

... should generates something like:
<a rel="nofollow" class="external text" href="news://comp.lang.apl">my_newsgroup</a>

... but generates:
<a rel="mw:ExtLink" data-parsoid='{"targetOff":22,"a":{"href":null},"sa":{"href":"news://comp.lang.apl"},"dsr":[0,35,22,1]}'>my_newsgroup</a>

so, without "href" attribute to the "a" node.

Version: unspecified
Severity: trivial