Last modified: 2006-11-30 03:12:16 UTC
I can't tell whether this is or not a duplicate of bug 7051. It might be related to now fixed bug 3298 (Subst'ing ignore includeonly/noinclude). When you subst a template with ParserFunctions, the ParserFunctions syntax ends up in the article, whereas you would only want the output. This is especially troublesome with templates like [[:en:Category:Conversion templates]], which can't be subst'ed.
When you substitute a template with text in it, that text ends up in the page. If you substitute a template containing a template, what happens? This is a duplicate of that larger behaviour.
*** This bug has been marked as a duplicate of 2777 ***