REGRESSION (r253267): Swipe from edge on Twitter images no longer goes back
Created attachment 389271 [details] Patch
<rdar://problem/58966044>
Comment on attachment 389271 [details] Patch Clearing flags on attachment: 389271 Committed r255456: <https://trac.webkit.org/changeset/255456>
All reviewed patches have been landed. Closing bug.