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 Strange effect in edit summary - left-hand side of diffs 

See the edit summary on the left-hand side of  it throws Harv error: link from #CITEREF_and_havnb_and_CITEREF_and_CS1 doesn't point to any citation. However, if you follow the  link, the same edit summary is shown on the right-hand side, but without the red error message.   "