<com:TContent ID="Content"> <h1>TTabPanel doesn't preserve active tab on callback request</h1> <com:TTabPanel id="tabpanel"> <com:TTabView id="tab1" Caption="Tab 1"> <p>This is Tab 1</p> </com:TTabView> <com:TTabView id="tab2" Caption="Tab 2"> <p>This is Tab 2</p> </com:TTabView> </com:TTabPanel> <com:TActiveButton id="btn1" OnCallback="buttonClickCallback" Text ="Click me"/> <com:TActiveLabel id="result"/> </com:TContent>