I have a user control in a dynamically created RadPageView inside of an additional RadMultiView. When you click to select a tab it display, if you move the mouse off of the user control then the user control disappears. I have the same user control in an another dynamically created RadPageView in a different window (it is in a Wizard control instead of a RadMultiView) and this doesn't happen.
Here are a couple of screen shots:
Here are a couple of screen shots: