On desktop, hovering over the area where the contribute menu would render causes it to appear. On iOS, once the contribute menu is opened it cannot be closed again.
Created attachment 266783 [details] Patch
Comment on attachment 266783 [details] Patch Clearing flags on attachment: 266783 Committed r193642: <http://trac.webkit.org/changeset/193642>
All reviewed patches have been landed. Closing bug.