Re: [csswg-drafts] Are the rules for interactions of transforms and backgrounds on the root element what we want? (#6683)

> In [web-platform-tests/wpt#30946](https://github.com/web-platform-tests/wpt/pull/30946) I just wrote some tests for backgrounds on the root element when the root element has a transform. Both interoperability and conformance to the current specification are poor. I think it's perhaps worth considering whether the specification says what we want it to say.

Note: separate from those pending tests, I think this issue is also the core of the differences-in-outcomes on these existing WPT tests (which happen to be in the compat2021 test suite, and all of which pass in Chromium but fail in other browsers):
https://wpt.fyi/results/css/css-transforms/transform-background-007.html
https://wpt.fyi/results/css/css-transforms/transform-background-008.html
https://wpt.fyi/results/css/css-transforms/transform-root-bg-001.html
https://wpt.fyi/results/css/css-transforms/transform-root-bg-002.html
https://wpt.fyi/results/css/css-transforms/transform-root-bg-003.html
https://wpt.fyi/results/css/css-transforms/transform-translate-background-001.html
https://wpt.fyi/results/css/css-transforms/transform-translate-background-002.html

(note that transform-translate-background-001.html and -002 are hitting some other behavior-differences as well, which I've got some notes on in https://bugzilla.mozilla.org/show_bug.cgi?id=1724459 )

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Received on Friday, 10 December 2021 00:48:58 UTC