I believe this catches the remaining stale-node-pointer issues.
Created attachment 180090 [details] Patch
Ping
Comment on attachment 180090 [details] Patch pong
Comment on attachment 180090 [details] Patch Ty!
Comment on attachment 180090 [details] Patch Clearing flags on attachment: 180090 Committed r138181: <http://trac.webkit.org/changeset/138181>
All reviewed patches have been landed. Closing bug.