Steps to reproduce: 1. In Safari's Develop menu, select User Agent > Firefox 4.0.1 - Mac (this workaround is necessary due to <https://bugs.webkit.org/show_bug.cgi?id=79443>). 2. Navigate to the URL (sign in to iCloud if necessary). 3. Select the Numbers tab and drag a Numbers document from the Finder into the browser window. Expected result: A progress window appears as the Numbers document is uploaded to iCloud, then it is added to the view of documents in the cloud. Actual result: The progress window appears but makes no progress. The upload never completes. Regression: Caused by <http://trac.webkit.org/r109022>
<rdar://problem/11000265>
*** This bug has been marked as a duplicate of bug 80203 ***