Bug 214646

Summary:	Stop margins from propagating into (cross-origin?) iframes
Product:	WebKit	Reporter:	Simon Fraser (smfr) <simon.fraser>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	ahmad.saleem792, darin, koivisto, simon.fraser, webkit-bug-importer, zalan
Priority:	P2	Keywords:	InRadar, WPTImpact
Version:	Safari Technology Preview
Hardware:	Unspecified
OS:	Unspecified

Description Simon Fraser (smfr) 2020-07-22 11:35:20 PDT

We should cut this off:
https://research.securitum.com/marginwidth-marginheight-the-unexpected-cross-origin-communication-channel/

Comment 1 Radar WebKit Bug Importer 2020-07-22 11:35:48 PDT

<rdar://problem/65946853>

Comment 2 Darin Adler 2020-07-22 11:37:34 PDT

The only challenge, I suppose, is to do this without breaking legacy webpages. The code for this is in HTMLBodyElement::didFinishInsertingNode.

Comment 3 Ahmad Saleem 2023-07-13 16:58:09 PDT

Possible duplicate of bug 170336 and bug 4917?

Comment 4 Ahmad Saleem 2023-08-05 06:12:22 PDT

Adding WPTImpact tag because we have test for this: https://wpt.fyi/results/html/rendering/non-replaced-elements/the-page?label=master&label=experimental&aligned&q=the-page%2F

Only Firefox seems to be passing them and when I remove "HTMLBodyElement::didFinishInsertingNode", we do start passing 'iframe' tests.