Hi Philip Ashworth,
Currently we have an issue related to focusing RadRichTExtBoix when it is added to ScrollViewer. What happens here is that ScrollViewer handles MouseLeftButtonDown event internally and takes the focus away form the RadRichTextBox control.
You can workaround this behavior by attaching to the MouseLeftButtonDown event of RadRichTextBox in your UserControl and mark it as handled. This way the event will not bubble to the ScrollViewer. Here is a code snippet of how this can be done:
void editor_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
e.Handled = true;
If you have more questions or suggestions, please don't hesitate to contact us.
the Telerik team
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