Gantt Scrolling problem

Hi, a scrolling problem is in the attached video ScrollingProblem.wmv (412.1 KB)

I suspect that it might be related to smart rendering or to some combination of options, but I cannot reproduce the issue, and it is hard to suggest what really causes the issue as I don’t see your code.
Please, reproduce the issue in the following snippet, then click on the “Share” button and send me the link: