Hi Akhil Raj,
Thank you for your feedback.
I confirm the issue. We will address it in one of our next releases. For the time being, the only way to show the hidden nodes at design-time is to remove the serialized Visible values in the Designer file of your form. For example, if you have just hidden RadTreeNode2, you should remove the following setting:
Your Telerik points have been updated for the report.
the Telerik team
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