[Webkit-unassigned] [Bug 154815] New: Viewport changes after refresh

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=154815

            Bug ID: 154815
           Summary: Viewport changes after refresh
    Classification: Unclassified
           Product: WebKit
           Version: Safari 9
          Hardware: iOS
                OS: iOS 9.2
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ashley at scirra.com
                CC: simon.fraser at apple.com

Visit this URL: http://www.scirra.com/labs/bugs/iosviewport/refresh.html

Steps to reproduce:
1. Load the URL in landscape orientation
2. Turn the device to portrait orientation
3. Press refresh

Expected results:

Nothing changes

Observed results (on affected devices):

window.innerWidth and window.innerHeight become larger. The right and bottom edges of the red border disappear.

This only appears to affect certain devices. Of those I have access to:

iPad Pro: not affected
iPad Air 2: affected
iPad 2: affected
iPhone 4S: affected

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