[Webkit-unassigned] [Bug 266929] New: PDF has wrong offset after device rotate

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=266929

            Bug ID: 266929
           Summary: PDF has wrong offset after device rotate
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: iPhone / iPad
                OS: iOS 17
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: PDF
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: duy at microsoft.com
                CC: thorton at apple.com

Created attachment 469238

  --> https://bugs.webkit.org/attachment.cgi?id=469238&action=review

Here is the stack of that strange event that setting pdf offset to 0.

After pdf rotate, there may occurs a weird event that reset pdf scrollview's offset to 0; Causing it jump to the first page after rotate.
And sometimes the the size is also incorrect after rotate.
But calling "webScrollView.contentInset = webScrollView.contentInset" may continue to finish the rotate event of pdfHostViewController, and then reset the offset to the right one.
This bug can not repro on simulator, only repro in real device.
And sometime, the behavior is also different for release build and debug build.

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