Last modified: 2014-08-14 14:27:59 UTC
All other combinations work (mw.org+Commons, local wiki with master branch + Commons, local wiki with master branch + Beta Commons, beta wiki + real Commons), but beta wiki + Beta Commons does not: http://commons.wikimedia.beta.wmflabs.org/w/api.php?action=query&prop=imageinfo&iiprop=extmetadata&titles=File:Sand%20Diego%20skyline%20at%20night.JPG http://en.wikipedia.beta.wmflabs.org/w/api.php?action=query&prop=imageinfo&iiprop=extmetadata&titles=File:Sand%20Diego%20skyline%20at%20night.JPG
After reviewing the code, I have no idea what could cause this. The extensions gets the HTML from File::getDescriptionText() and passes it to CommonsMetadata_InformationParser::parsePage(). The information parser has no external dependencies at all, it should always give exactly the same result for the same HTML. File::getDescriptionText() works the same way for all foreign files, and only depends on the fetchDescription configuration setting, which is enabled on labs: http://noc.wikimedia.org/conf/highlight.php?file=filebackend-labs.php I have no better idea than to wait until the beta code is deployed live, and see if the problem persists.
Beta-only issue, never figured out the exact reason but does not appear anymore.