Bug 265377

Summary: filter doesn't establish a containing block like transform
Product: WebKit Reporter: Emilio Cobos Álvarez (:emilio) <emilio>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: bfulgham, ntim, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
test-case none

Description Emilio Cobos Álvarez (:emilio) 2023-11-27 06:55:37 PST
Created attachment 468765 [details]
test-case

See test-case. Per spec:

> 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.

https://drafts.fxtf.org/filter-effects-1/#FilterProperty
Comment 1 Radar WebKit Bug Importer 2023-12-04 06:56:17 PST
<rdar://problem/119130847>