Changing the render mode of the Editor Dynamically on the server-side leads to a JavaScript error:

Uncaught TypeError: Cannot read property 'render' of null
    at Telerik.Web.UI.Editor.Modules.RadEditorNodeInspector.render

The issue is introduced in 2016 R3.


Steps to reproduce:
Run the following configuration:

<telerik:RadEditor ID="RadEditor1" runat="server"></telerik:RadEditor>

CS:

protected void Page_Load(object sender, EventArgs e)
    {
        RadEditor1.RenderMode = Telerik.Web.UI.RenderMode.Mobile;
    }