Thanks for bringing this to our attention.
The straight line you've observed represents the RadChart's vertical axis which, in case of scrolling enabled, does not seem to work as expected. I have discussed this with our developers who will research the problem and provide a fix in a future release. In the meanwhile, if applicable in your scenario, you could set the axis Visible
property to false
We are sorry for the inconvenience. Your Telerik points have been updated.
All the best,
the Telerik team
, the state of the art learning tool for Telerik products.