I'm afraid we are still unable to replicate the issue you are observing. Could you please let us know whether this is the only device where you are experiencing the behavior?
Additionally, in your first post you mentioned RadComboBox, whereas the code snippet from your last reply shows a ComboBox. Could you please confirm whether the issue occurs in both cases?
If the issue is observed with RadComboBox only, please try the following code and let us know what the results are:
RadComboBox combo =
Additionally, we would recommend making sure that the InlineUIContainer where a control is placed is as big as the control in it. Please try setting the proper dimensions to the container and check the behavior again.
On a side note, RadDocument's InsertInline() method has been deprecated and I'd advise you against using it. Instead, you can use the InsertInline() method of RadRichTextBox like this:
I hope these suggestions are useful.
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