Bug 268595

Summary:

Nested subgrid causes page to hang

Product:

WebKit

Reporter:

Mendel Gordon <mendelgordons>

Component:

Layout and Rendering

Assignee:

Nobody <webkit-unassigned>

Status:

NEW

Severity:

Normal

CC:

bfulgham, karlcow, rik, sgill26, simon.fraser, webkit-bug-importer, zalan

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

See Also:

https://bugs.webkit.org/show_bug.cgi?id=232176
https://bugs.webkit.org/show_bug.cgi?id=271083

Attachments:

Description	Flags
Basic html you can use to replicate the issue	none

Mendel Gordon

Reported 2024-02-01 18:25:48 PST

Created attachment 469668 [details] Basic html you can use to replicate the issue I'm trying to use a nested subgrid and the page won't load on safari on my mac or my iphone. I tested it on webkit-main and it won't load there either - the page just hangs. I'm trying to have the header overlap the hero, and make everything else below them, but not have the rest of the items overlap. Opening the attached html works fine in chrome and firefox but won't open in webkit and or safari.

Attachments
Basic html you can use to replicate the issue (1.62 KB, text/html) 2024-02-01 18:25 PST, Mendel Gordon	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Mendel Gordon

Comment 1 2024-02-01 18:29:47 PST

Loading this html in safari or webkit doesn't work either - it's a simpler version: <style> #a { display: grid; } #a div { display: grid; grid-template-columns: subgrid; grid-template-rows: subgrid; grid-row: 1/99; } </style> <div id="a"> <div id="b"> <div id="c"> <div id="d"> <div id="e"> <div style="width: 100px; height: 100px; background-color: red"></div> </div> </div> </div> </div> </div> Here's a screenshot showing how the page loads in chrome and firefox but not webkit: https://shottr.cc/s/VTFo/SCR-20240201-um9.jpeg The webkit windows on the right are just showing the page they were on before I tried navigating to the problematic code.

Radar WebKit Bug Importer

Comment 2 2024-02-08 18:26:25 PST

<rdar://problem/122597208>

Note You need to log in before you can comment on or make changes to this bug.