Unfortunately, we were unable to reproduce the behavior you are observing.
Can you please check what is the LayoutMode of your RadRichTextBox? If it is set to FlowNoWrap, then it is possible the tables are not corrrectly measured, as they sometimes depend on the width of their document.
In addition, could you explain what you mean by "the refresh"? Is this when the typed symbol appears or something else?
In any case, can you please open a support ticket and send us a sample document exported to XAML. This will greatly help us in exploring and solving this issue.
the Telerik team