I think I understand now. Under your proposal, it makes sense to prevent detaching descendants of flattening nodes. But, assuming we had multiple descendants without flattening ancestor under a root with transform-style: preserve-3d, how do we identify which of these should be rendered on detached surfaces? 1) Each to its own surface - I cannot think of any obvious negatives, but it does not seem like a good idea. 2) Only descendants with transforms that lift it out of the page - This introduces some corner cases. Like do we still detach if it has two ancestors, one which lifts it out with translatez and another which puts it back with z=0? I believe explicitly declaring that these nodes are detached would avoid these issues. -- GitHub Notification of comment by abalasubramaniyan-ml Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/4242#issuecomment-551962363 using your GitHub accountReceived on Friday, 8 November 2019 19:36:45 UTC
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