Last modified: 2013-09-23 23:15:07 UTC
Because firefox converts path attributes to absolute URLs, the hashes don't match up, so VE pastes the plain-text equivalent content (empty string).
Change 85213 had a related patch set uploaded by Esanders: Clipboard hash should ignore all node attributes https://gerrit.wikimedia.org/r/85213
Change 85213 merged by jenkins-bot: Ignore all node attributes in clipboard hash https://gerrit.wikimedia.org/r/85213