Bug 225034
| Summary: | Exclude creating a containing block for document root element (<html>) on will-change: filter/backdrop-filter | ||
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| Product: | WebKit | Reporter: | Tim Nguyen (:ntim) <ntim> |
| Component: | Layout and Rendering | Assignee: | Nobody <webkit-unassigned> |
| Status: | NEW | ||
| Severity: | Normal | CC: | ahmad.saleem792, bfulgham, gsnedders, simon.fraser, webkit-bug-importer, zalan |
| Priority: | P2 | Keywords: | InRadar |
| Version: | WebKit Nightly Build | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| URL: | http://wpt.live/css/css-will-change/will-change-fixedpos-cb-003.html | ||
| See Also: | https://bugs.webkit.org/show_bug.cgi?id=243571 | ||
Tim Nguyen (:ntim)
will-change: filter/backdrop-filter should not create a containing block on the root element.
WPT: https://webkit-search.igalia.com/webkit/source/LayoutTests/imported/w3c/web-platform-tests/css/css-will-change/will-change-fixedpos-cb-003.html
Spec: https://drafts.fxtf.org/filter-effects/#FilterProperty
> A value other than none for the filter property results in the creation of a containing block for absolute and fixed positioned descendants unless the element it applies to is a document root element in the current browsing context. The list of functions are applied in the order provided.
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| Add attachment proposed patch, testcase, etc. |
Simon Fraser (smfr)
The root is always a containing block so I'm confused by this bug.
zalan
(In reply to Simon Fraser (smfr) from comment #1)
> The root is always a containing block so I'm confused by this bug.
I looked at the test case and apparently the root here means the <html> element and not the Initial Containing Block.
Please rename the bug.
Radar WebKit Bug Importer
<rdar://problem/77437740>
Sam Sneddon [:gsnedders]
*** Bug 243571 has been marked as a duplicate of this bug. ***