Thanks for contacting us and for your interest in RadControls for WinForms.
Could you please give us more details on your case since I am not able to reproduce the behavior that you describe?
What I did was:
1. Create a new UserControl in my project and add a RadCarousel control to it.
2. Insert some items in the RadCarousel control.
3. Add a Windows Form to my project and insert the UserControl in it
4. Run the application.
Everything seems to work fine for me.
A simple Windows Forms application that manages to reproduce the issue would be very helpful for me to investigate the reason for the issue.
Please note that you will have to open a new support ticket in order to be able to attach your project.
Thanks for your time.
the Telerik team