BoxGeometry has this double geometry interface where borderBox() is (0, 0, border box width, border box height) while logicalRect is in the coordinate system of the containing block.
Created attachment 412224 [details] Patch
Committed r268948: <https://trac.webkit.org/changeset/268948> All reviewed patches have been landed. Closing bug and clearing flags on attachment 412224 [details].
<rdar://problem/70649306>