Bug 240970 - [Interop 2021] WPT upstream expectation change: css/css-flexbox/flex-minimum-height-flex-items-023.html fails
Summary: [Interop 2021] WPT upstream expectation change: css/css-flexbox/flex-minimum-...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: CSS (show other bugs)
Version: WebKit Nightly Build
Hardware: All Unspecified
: P2 Normal
Assignee: Nobody
Keywords: InRadar
Depends on: 214292
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Reported: 2022-05-26 12:58 PDT by Ryan Reno
Modified: 2022-06-22 10:35 PDT (History)
3 users (show)

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Description Ryan Reno 2022-05-26 12:58:22 PDT
The green square appears to overflow by 25% from expected.

Link to the WPT result:


This was fixed in r273955
Comment 1 Radar WebKit Bug Importer 2022-05-26 13:00:14 PDT
Comment 2 Ryan Reno 2022-05-26 13:07:23 PDT
This may have slipped by our test suite because these flex-minimum-height-flex-items-XXX.html tests are marked [ImageOnlyFailure] in TestExpectations:

Comment 3 Ryan Reno 2022-05-26 13:42:23 PDT
After looking a little further into this, it looks like the test changed to match Chrome's behavior in Oct 2021, 9 months after r273955

The commit message for the WPT test (https://github.com/web-platform-tests/wpt/commit/2c83d2e8d545706b565dc6e3dcf77daa77eb5e96) indicates that the behavior of Chrome, FF, and WebKit was out of spec according to the discussion here:


When running Safari against that revision and the test as it existed in 03/2021 it looks like the revision did cause the test to pass but the interpretation of the spec may have changed. I'll look more closely at the csswg discussion.
Comment 4 Karl Dubost 2022-05-26 19:53:29 PDT
Firefox bug about it