Fix selection hang in Mail
Created attachment 372084 [details] Patch
<rdar://problem/51538344>
<rdar://problem/51388180>
Created attachment 372085 [details] Patch
Comment on attachment 372085 [details] Patch Clearing flags on attachment: 372085 Committed r246425: <https://trac.webkit.org/changeset/246425>
All reviewed patches have been landed. Closing bug.