The {{DEFAULTSORT:}} magic word affects only the category sorting for the page upon which it is placed, and not that of the associated talk page (see, for example, the categories of http://en.wikipedia.org/wiki/Charles_Burrell_%26_Sons, where the page is sorted under B, and of http://en.wikipedia.org/wiki/Talk:Charles_Burrell_%26_Sons, which is sorted under C), so I know that the sort key is definitely not inherited by the talk page. Is this non-inheritance (a) a MediaWiki limitation; (b) a deliberate omission for performance reasons; (c) a bug that can be fixed or (d) a feature which it's possible to implement?
Version: 1.17.x
Severity: enhancement