Empty space at smart rendering mode dhtmlx 4.0.3 pro version

I have a problem with smartRendering mode ( dhtmlx 4.0.3). After repeatable scrolling you can see some empty space at the bottom of table, even if don’t use custom css.
In attach image about the problem .

Any suggestion how to fix it ?’
Many thanks
Best regards

That issue was fixed. Please, try to open ticket at support.dhtmlx.com and you will be provided a fix.