Fixes #2333 Scrollbar width on browser zoom (#2344)

lib/timeline/Core.js

@@ -1087,6 +1087,7 @@ Core.prototype._startAutoResize = function () {
         (me.dom.root.offsetHeight != me.props.lastHeight)) {
         me.props.lastWidth = me.dom.root.offsetWidth;
         me.props.lastHeight = me.dom.root.offsetHeight;
+        me.props.scrollbarWidth = util.getScrollBarWidth();
 
         me.body.emitter.emit('_change');
       }