[Webkit-unassigned] [Bug 205396] New: Rotating the device increases the page zoom with each rotation, once a pinch zoom has been performed

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=205396

            Bug ID: 205396
           Summary: Rotating the device increases the page zoom with each
                    rotation, once a pinch zoom has been performed
           Product: WebKit
           Version: Safari 13
          Hardware: iPhone / iPad
                OS: iOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: webkitwyv at gmail.com

Steps to reproduce:

- Create an html file with e.g. just the word "Test" in it.
- Open that file using Safari on a device running at least iOS 13. The bug cannot be reproduced on a lower iOS version or on Chrome for iOS.
- Pinch zoom the page in and back out to its original zoom level.
- Change the device orientation a couple of times. With each rotation, the zoom will increase a little bit, making the word "Test" appear larger and larger.

Additional info:

- The bug can be "disabled" by reloading the page with a changed URL, e.g. by appending a '#' to the URL or removing it again.
- The bug will then not occur again until another pinch zoom is performed.

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