Bug 123142

Summary: [CSS Regions] Fix Incorrect Clipping of Box-Shadow and Outline of Composited Nested Regions
Product: WebKit Reporter: Mihai Maerean <mmaerean>
Component: WebCore Misc.Assignee: Mihai Maerean <mmaerean>
Severity: Normal CC: bfulgham, mibalan, WebkitBugTracker
Priority: P2 Keywords: AdobeTracked
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on:    
Bug Blocks: 84900    

Description Mihai Maerean 2013-10-22 01:47:13 PDT
Unlike its non-region siblings, the box-shadow and the outline of a composited nested region is clipped.
This is visible when the margin of the nested region is smaller than the size of the box-shadow or of the outline.
You can see this in https://trac.webkit.org/export/157780/trunk/LayoutTests/compositing/regions/region-as-layer-in-another-flowthread.html if you lower the margin-left to be less than the size of the box-shadow or the size of the outline.
Comment 1 Brent Fulgham 2022-07-13 09:22:04 PDT
CSS Regions were removed in Bug 174978.