cursor out of control in textarea on IOS8 safari

Question

cursor is not in textarea when user input long text or input some enter. This only happens on IOS8. see attachment.

Answer 1

find a wordaround to resolve the problem.

textarea.addEventListener('scroll', function(evt){
    evt = evt || window.evt;
    evt.target.setSelectionRange(evt.target.textLength - 1, evt.target.textLength - 1);
    setTimeout(function(){
        evt.target.setSelectionRange(evt.target.textLength, evt.target.textLength);
    }, 0);
});