Use mobile UA on jsfiddle.net
Created attachment 373871 [details] Patch
<rdar://problem/50839844>
Comment on attachment 373871 [details] Patch Sad but necessary.
Comment on attachment 373871 [details] Patch Clearing flags on attachment: 373871 Committed r247357: <https://trac.webkit.org/changeset/247357>
All reviewed patches have been landed. Closing bug.