Created attachment 58328 [details]
Attached is a test html file, just drag a file into the draggable area (you should see some debug in the window) and then drop, this will cause the file to be deleted as it was a move event. Whereas in Qt 4.6.3 it was a copy event.
The attached patch solves the problem by using the more correct acceptProposedAction() instead of accept().
Created attachment 58329 [details]
Confirmed on X11, too.
Andy's patch is correct
Committed r60942: <http://trac.webkit.org/changeset/60942>
Revision r60942 cherry-picked into qtwebkit-2.0 with commit 0f40b3b53c931a8161babfd2335067de0970dfd5
http://trac.webkit.org/changeset/60942 might have broken Chromium Linux Release
The following changes are on the blame list: