Last modified: 2009-03-12 12:27:13 UTC
Created attachment 5881 [details] Screenshot of sample garbled category list. Trying to set MediaWiki:Catseparator as {{int:pipe-separator}} so as to have only one unique separator, yields garbage, as the attached screen shot shows.
Confirmed on local install. On the one hand, it's probably not a good idea to do this anyway. But at the same time: you should expect it to work if you do it.
fixed in r48346.