function _onLoadTimeline(resultHTML){
            if(resultHTML === vars.timelineHTML){ // update only HTML has changed
                return;
            }

            _fixTimelineHeight();

            var timelineList = _getRenderedTimeline(resultHTML);

            setTimeout(function(){
                elements.timelineList.replaceWith(timelineList);
                elements.timelineList = timelineList;
                vars.timelineHTML = resultHTML;

                var isChanged = (vars.timelineItems !== _countTimelineItems());
                var isTimelineChangedOnTyping = vars.isTextareaOnFocused && isChanged;

                var scrollGap = isTimelineChangedOnTyping ?
                    (elements.textarea.offset().top - $(document).scrollTop()) : 0;

                _unfixTimelineHeight();

                if(isTimelineChangedOnTyping){
                    $(document).scrollTop(elements.textarea.offset().top - scrollGap);
                }
            }, 500);
        }
Render issue timeline on load HTML

@param resultHTML
@private