This got fixed by https://bugs.webkit.org/show_bug.cgi?id=219501 on 64-bits
Created attachment 415410 [details] Patch
Comment on attachment 415410 [details] Patch r=me
Comment on attachment 415410 [details] Patch Thank you for the review!
Committed r270431: <https://trac.webkit.org/changeset/270431> All reviewed patches have been landed. Closing bug and clearing flags on attachment 415410 [details].
<rdar://problem/71979049>