Bug 252834

Summary:	Don't let intrinsic padding skew pagination struts on table cells
Product:	WebKit	Reporter:	Ahmad Saleem <ahmad.saleem792>
Component:	Tables	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	webkit-bug-importer, zalan
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Ahmad Saleem 2023-02-23 09:07:13 PST

Hi Team,

While going through Blink's commit, I came across another one where were were failing test case:

Test Case - https://jsfiddle.net/n9fuxpch/show

Blink Commit - https://chromium.googlesource.com/chromium/src.git/+/eacb4f4eb2e61cc6febe80fe23eb44eba2bde8e8

^ We don't match with Expected of this result while Chrome Canary 112 does.

WebKit Source - https://searchfox.org/wubkat/source/Source/WebCore/rendering/RenderTableRow.cpp#151

____

clearIntrinsicPadding();

but I am not sure about 'CellChildrenNeedLayout' but just wanted to raise so we can track this failure.

Thanks!

Comment 1 Radar WebKit Bug Importer 2023-03-02 09:08:14 PST

<rdar://problem/106148471>

Comment 2 Ahmad Saleem 2023-03-02 17:23:34 PST

Figured out:

            if (cell->cellWidthChanged())
                cell->clearIntrinsicPadding();

____

It leads to Safari match print output in following with Chrome Canary 112 but seems to be broken behavior IMO:

Test Case - https://jsfiddle.net/m0vwngk2/show

Do we need to fix this? Would appreciate any input. Thanks!

Comment 3 Ahmad Saleem 2024-06-28 16:17:46 PDT

PR attempt - https://github.com/WebKit/WebKit/pull/12391

Test Locally on WebKit TOT - now it passes both test, might do PR again.