This can be demonstrating by pasting some markup from an editable div from another browser into GtkLauncher.
Created attachment 59785 [details] Patch
Comment on attachment 59785 [details] Patch r=me
Comment on attachment 59785 [details] Patch Clearing flags on attachment: 59785 Committed r61881: <http://trac.webkit.org/changeset/61881>
All reviewed patches have been landed. Closing bug.