NEW89713
Pixel cracks possible in flexbox when deviceScaleFactor is greater than 1 
https://bugs.webkit.org/show_bug.cgi?id=89713
Summary Pixel cracks possible in flexbox when deviceScaleFactor is greater than 1
Beth Dakin
Reported 2012-06-21 17:11:01 PDT
These three layout tests fail when you run them on a Retina Macbook Pro or any Mac running in HiDPI mode: ietestcenter/css3/flexbox/flexbox-align-baseline-001.htm ietestcenter/css3/flexbox/flexbox-align-center-001.htm ietestcenter/css3/flexbox/flexbox-align-center-002.htm The results seem to indicate pixel cracks are the problem. It would be nice in the short term to have a new directory like the platform directory for test results that are specific to different deviceScaleFactors.
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Radar WebKit Bug Importer
Comment 1 2012-06-21 17:11:59 PDT
<rdar://problem/11723744>
Ahmad Saleem
Comment 2 2023-02-24 08:56:03 PST
We don't have these as failure on macOS text expectation but have it on iOS: https://searchfox.org/wubkat/source/LayoutTests/platform/ios/TestExpectations#1362 Are these [ ImageOnlyFailure ] tracked with this bug? Or we can close this because this was for Mac?
Sam Sneddon [:gsnedders]
Comment 3 2025-05-22 16:45:39 PDT
On macOS we haven't run tests in HiDPI mode for a very long time; but we do for iOS. That said, this definitely still occurs: imported/w3c/web-platform-tests/css/css-flexbox/align-self-001.html has a whole load of cracks that makes it fail at 3x — and test results look much worse at 3x than 2x.
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