backface-visibility: hidden with transform-style: preserve-3d fails the "is.visible" test · Issue #5682 · cypress-io/cypress · GitHub
css-transforms-2] transform-style: flat should not create stacking context, and 3D context grouping · Issue #1950 · w3c/csswg-drafts · GitHub
![Re: [3d-transforms] Behavior of intersecting layers with transform-style: preserve-3d is undefined and inconsistent across implementations from Chris Marrin on 2011-10-07 (public-fx@w3.org from October to December 2011) Re: [3d-transforms] Behavior of intersecting layers with transform-style: preserve-3d is undefined and inconsistent across implementations from Chris Marrin on 2011-10-07 (public-fx@w3.org from October to December 2011)](http://greggman.com/downloads/examples/correct-3d-css-polygon-sorting-subdivisions-safari.png)