Hello Gareth McNicol,
Unfortunately we wasn't able to reproduce the issue described by you.
We tested it with exactly the same version of the Blend and the version of our controls mentioned by you.
I have prepared a small screen-cast
, showing the action that I perform in order to add a RadExpander control in Blend.
Can you please review it and let us know if you find any differences between mine and your actions?
It will be great if you can send us any additional information related to the problem.
the Telerik team
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