On most Commons pages, both logged-in and logged-out. Chrome stable.
E.g. viewing https://commons.wikimedia.org/wiki/File:Example.jpg
Exception in module-execute in module wikibase.mediainfo.filePageDisplay: load.php?debug=false&lang=en&modules=startup&only=scripts&skin=vector:2 SyntaxError: Unexpected token u in JSON at position 0 at JSON.parse (<anonymous>) at DepictsPanel.sd.DepictsPanel.initialize (<anonymous>:482:550) at <anonymous>:483:962 at mw.loader.implement.wikibasemediainfo-filepage-add-caption (<anonymous>:483:976) at runScript (VM655 load.php:13) at execute (VM655 load.php:15) at doPropagation (VM655 load.php:7)