This seems to have started around https://trac.webkit.org/changeset/262991/webkit.
<rdar://problem/64427778>
Created attachment 402057 [details] Patch
Comment on attachment 402057 [details] Patch r=me
(In reply to David Kilzer (:ddkilzer) from comment #3) > Comment on attachment 402057 [details] > Patch > > r=me ty!
Committed r263171: <https://trac.webkit.org/changeset/263171> All reviewed patches have been landed. Closing bug and clearing flags on attachment 402057 [details].