Radiobuttonlist selectedIndexChange event does not fire when nested inside of a RadSplitter/RadPane
<telerik:RadSplitter
runat="server"
ID = "radSplitter1"
ResizeWithBrowserWindow="true"
Orientation="Vertical"
ResizeMode="Proportional">
<telerik:RadPane
runat="server"
ID=radPane1>
<telerik:RadioButtonList
runat="server"
ID="radioButtonList1"
Direction="Vertical"
AutoPostBack="true"
OnSelectedIndexChange="RadioButtonList1_SelectedIndexChanged">
<Databindings
DataTextField="Name"
DataValueFields="Value"
DataSelectedField="Selected"/>
</telerik:RadioButtonList>
</telerik: RadPane>
</telerik:RadSplitter>
When I move the RadioButtonList to the outside of the RadSplitter then the RadioButtonList1_SelectedIndexChanged fires. I'm using Telerik Version 2017.1.228.445