I assume these fail for whatever reason on Mac/other platforms, but consistently pass on WPE/Gtk.
Created attachment 390347 [details] Patch
Comment on attachment 390347 [details] Patch Clearing flags on attachment: 390347 Committed r256299: <https://trac.webkit.org/changeset/256299>
All reviewed patches have been landed. Closing bug.
<rdar://problem/59342742>