The page isn't scrollable with pan gestures anyways in this scenario, so it doesn't make sense that it's still scrollable by double tapping. However, we need to make sure that we still allow scrolling when revealing focused editable elements (otherwise, they could be underlapped by the software keyboard).
<rdar://problem/56960774>
Created attachment 390101 [details] Patch
Created attachment 390108 [details] Patch
Created attachment 390110 [details] Update 'Reviewed by' line again
Comment on attachment 390110 [details] Update 'Reviewed by' line again Clearing flags on attachment: 390110 Committed r256072: <https://trac.webkit.org/changeset/256072>
All reviewed patches have been landed. Closing bug.