The URL was served for me in 22.766 s and contain spurious entries (without visualeditor tag) like
21:47, 17 June 2013 . . (0) . . Feedback: Wikipedia:File Upload Wizard . . DenakiPanos70 (talk)
This practically equivalent search was served in 1.645 s: https://en.wikipedia.org/w/index.php?limit=500&tagfilter=visualeditor&title=Special%3AContributions&contribs=newbie&target=&namespace=8&nsInvert=1&tagfilter=visualeditor&year=2013&month=-1
Version: master
Severity: major
URL: https://en.wikipedia.org/w/index.php?limit=500&tagfilter=visualeditor&title=Special%3AContributions&contribs=newbie&target=&namespace=&tagfilter=visualeditor&year=2013&month=-1