First observed on es.wiktionary during the August release of CatWatch, but I hadn't the time to confirm this properly. We have several categories of the form Categoría:Wikcionario:xx, which translates to the canonical names Category:Project:xx. It must be noted that the category's title starts from the second member (Wikcionario:xx); however, CatWatch would skip the Category: part and treat Project: (or whatever alias is used) as the new namespace prefix.
This has been reproduced on test.wikipedia:
- Create Category:Project:CatWatchTest
- Add a link to this category somewhere: edit
- Take a look at the RC:
16:46 Wikipedia:CatWatchTest . . (0) . . Peter Bowman (talk | contribs) (User:Peter Bowman/misc added to category) (diff | hist)
The Project: bit was resolved to Wikipedia: and the RC link points now to an incorrect title: [[Wikipedia:CatWatchTest]].