[Webkit-unassigned] [Bug 170079] New: WKWebView's title change triggers extra KVO callbacks

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=170079

            Bug ID: 170079
           Summary: WKWebView's title change triggers extra KVO callbacks
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: iPhone / iPad
                OS: iOS 10
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: eugenebut at chromium.org

Created attachment 305328

  --> https://bugs.webkit.org/attachment.cgi?id=305328&action=review

Test app

WKWebView triggers 3 KVO callbacks when title is changed via JavaScript instead of one

Steps to Reproduce:
1. Build and run attached test app
2. Look into Xcode console

Expected Results:
One KVO callback with "Title2" as a title

Actual Results:
3 KVO callbacks with "Title2", "", "Title2" as a titles

Possibly a dup of: https://bugs.webkit.org/show_bug.cgi?id=167065

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