Hi,
I found this behaviour when dealing with a Semantic MediaWiki parser function (subobject). I imagine it might affect other extensions as well.
Example:
Template Store:
{{#subobject:Program
Has Name={{{1}}} |
Has URL={{{2}}} |
}}
Page:
{{Store|Firefox|http://download.mozilla.org/?product=firefox-27.0&os=win&lang=ca}}
seems to break the {{{2}}} parameter processing.
Reference: https://github.com/SemanticMediaWiki/SemanticMediaWiki/issues/193
Version: unspecified
Severity: normal