Bug 261195

Summary:	Many tests in css/css-sizing/contain-intrinsic-size fail in Safari
Product:	WebKit	Reporter:	Ryosuke Niwa <rniwa>
Component:	Layout and Rendering	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED INVALID
Severity:	Normal	CC:	bfulgham, cathiechen, ntim, simon.fraser, zalan
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:	261193, 261194
Bug Blocks:

Description Ryosuke Niwa 2023-09-06 00:41:43 PDT

See https://wpt.fyi/results/css/css-sizing/contain-intrinsic-size?label=experimental&label=master&aligned

Safari fails a bunch of test cases even though they all claim to be passing in WebKitTestRunner:
https://github.com/WebKit/WebKit/tree/main/LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/contain-intrinsic-size

Comment 1 Ryosuke Niwa 2023-09-06 01:06:30 PDT

In fact, these tests are passing in WebKitTestRunner / DumpRenderTree but fail when ran inside MiniBrowser or Safari. I have no idea what on the earth is happening here...

Comment 2 Tim Nguyen (:ntim) 2023-09-06 01:12:09 PDT

The failures are expected, we haven't enabled content-visibility on Safari, but it is enabled on WKTR. (The failing tests rely on content-visibility)