Hello Alexey,
The RadScheduleView control is placed inside a ScrollViewer and the HorizontalScrollBarVisibility and VerticalScrollBarVisibility properties of the ScrollViewer are explicitly set to Auto. This forces the RadScheduleView control to measure with infinity which is not supported because of the data virtualization.
I suggest you remove the HorizontalScrollBarVisibility and VerticalScrollBarVisibility properties and leave the ScrollViewer by default.
Hope this helps.
Kind regards,
Dani
the Telerik team
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