First of all, thank you for your feedback on our RadWindow control. We have already started doing research for the positioning of multiple RadWindows using the RadWindowManager. We are planning to use some of our panel in order to do the measuring and arragement, but we are still analyzing the use scenaria. Would you give us an example of how and why you would apply the various scenaria you would like to have, in order to evaluate and pick the top priority ones.
Second of all, are you sure you are using the latest release of our controls? Since our latest release we have included a roadmap history in which you can check the bugfixes, changes and features we have implemented. I bet the bug you have concern about is already fixed. Please check the http://www.telerik.com/products/silverlight/release-history.aspx
document in which there is a bullet point describing the following bugfix:
If RadWindow was hidden and then shown again, the size of the RadWindow appeared much smaller than it should be
If you use the latest release and you still experience some unexpected behavior, please feel free to share your experience with us.
the Telerik team
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