There are a few editors whose names contain newline characters. (As of the 2015-05-20 data dump, there were 109 in total, of which 2 had a name ending in \r\r\n, 60 a name ending in \r\n with something other than \r before, 46 with a \r\n somewhere in the middle (of which 1 with two such sequences in the name), and 1 with a lone \n in the middle.)

Even though they can be found in the search, the link from the search results page is not working because the URL only contains a single %0A (\n) for each run of newline characters; example query, URL from the search result, working URL.

It could be a bug in the search server (returning wrong editor names) or in MBS (broken processing of the search result).