[Webkit-unassigned] [Bug 230106] New: Safari Transitions No Longer Convert Between px and %

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=230106

            Bug ID: 230106
           Summary: Safari Transitions No Longer Convert Between px and %
           Product: WebKit
           Version: Other
          Hardware: iPhone / iPad
                OS: Other
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: matt at mattpringle.co.uk

This is iOS 15 beta 8 Safari

This CSS code previously worked, where adding a class to start the transition would animate from 100% to 0px.

transition: top 0.25s;
top: 100%;
html.active {
    top: 0px;
}

The above has stopped working in iOS 15 Safari Beta 8, but the below works, replacing the px with %

transition: top 0.25s;
top: 100%;
html.active {
    top: 0%;
}

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