Created attachment 280836 [details] The bad code probably responsible It looks like we mistakenly try to index into a number, as in the screenshot, and we end up trying to create a DOMTreeElement with a null DOMNode. This eventually throws an exception which is dropped on the floor by DOMTreeManager._wrapClientCallback.
<rdar://problem/26705901>
Created attachment 280839 [details] Proposed Fix
Comment on attachment 280839 [details] Proposed Fix Clearing flags on attachment: 280839 Committed r201843: <http://trac.webkit.org/changeset/201843>
All reviewed patches have been landed. Closing bug.