Links to invalid pages used to be red colored, now all links are blue. This css snippet restore their previous appearance (I know, !important smells): .wikilink2 { color: red !important; } If this change was intentional, please reconsider, it's a pain to click on a link just to find out the page doesn't exist. Also, this is contrary to the wiki standard.
Fixed in the latest commit, this will propagate into production in some time.