[Webkit-unassigned] [Bug 166978] New: Archive flicker in scroll on Cordova 4+, WKWebView and iOS 10

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=166978

            Bug ID: 166978
           Summary: Archive flicker in scroll on Cordova 4+, WKWebView and
                    iOS 10
    Classification: Unclassified
           Product: WebKit
           Version: Other
          Hardware: iPhone / iPad
                OS: iOS 10
            Status: NEW
          Severity: Major
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tomkinson at hotmail.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Webkit with WKWebView
iOS 10
Cordova version iOS 4.3.1

Hi all.

We see a flicker that we are not sure if it is bounce or inertia caused. Almost like an archiving when the user swipes or keeps finger on the screen for a 'long' swipe.
You can see the issue here and the flash of the messages. I would not personally say it is inertia caused as I see it while keeping my finger on screen, but that certainly exasperates the bug.

https://www.youtube.com/watch?v=pqcUXpEpgec

No idea what is causing this and have done days of extensive research. Grateful for any help or ideas?

If it helps we have;
-webkit-overflow-scrolling (hardware accelerated)
cordova.plugins.Keyboard.disableScroll(true) = yes
-webkit-backface-visibility: hidden; = true
Translate3d = yes
jQuery scrollTop() = we don't measure

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