The depicted problem is quite peculiar, as the images of a RadRotator in CoverFlow
mode should be displayed with the correct sizes when the control is loaded, event before the scrolling animation has started. Note that such problem has not been reported previously and I am not able to provide much assistance, given the provided information.
Since currently I am mostly guessing as to what your setup is, please send us a simple, runnable project
that isolates your case so that we can inspect it locally and pinpoint the cause.
the Telerik team
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