Mobile Safari bug on fixed positioned button after scrollTop programmatically changed…?

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We also encountered this bug on 2 different iPad applications, for us the best fix was to temporarily remove the fixed position from the fixed element once the animated scroll had finished, then use window.scroll with the vertical value we’d just performed the animated scroll to, then finally re-apply the position fixed style. It does cause a very minor blip as the ipad re-renders the element but its preferable to the bug.

var $fixedElement = $('#fixedNavigation');
var topScrollTarget = 300;
$("html:not(:animated),body:not(:animated)").stop().animate({ scrollTop: topScrollTarget }, 500, "swing", function(evt) {
    $fixedElement.css({ "position": "relative" });
    window.scroll(0, topScrollTarget );
    $fixedElement.css({ "position": "fixed" });
});

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