This can be handy for testing
Created attachment 341784 [details] Patch
<rdar://problem/40689440>
Comment on attachment 341784 [details] Patch Clearing flags on attachment: 341784 Committed r232420: <https://trac.webkit.org/changeset/232420>
All reviewed patches have been landed. Closing bug.
Confirmed that this fixes the problem in WebKit 2.