Created attachment 382367 [details] Testcase Resize Observer callbacks just show as "Script Evaluated".
<rdar://problem/56760736>
Created attachment 382409 [details] Patch
Comment on attachment 382409 [details] Patch Clearing flags on attachment: 382409 Committed r251832: <https://trac.webkit.org/changeset/251832>
All reviewed patches have been landed. Closing bug.