asp.net - juiceui AccordionPanel 内的 DropDownList 不保持视图状态

Question

如标题中所述。这是标记：

<asp:ScriptManager runat=server ID="sc1"></asp:ScriptManager>



    <juice:Accordion runat=server ViewStateMode=Enabled>
        <AccordionPanels>
            <juice:AccordionPanel runat=server Title=teste >
                <PanelContent>
                    <asp:DropDownList runat=server AutoPostBack=true>
                        <asp:ListItem>2014</asp:ListItem>
                        <asp:ListItem>2013</asp:ListItem>
                        <asp:ListItem>2012</asp:ListItem>
                    </asp:DropDownList>
                </PanelContent>
            </juice:AccordionPanel>
            <juice:AccordionPanel ID="AccordionPanel1" runat=server Title=teste234 EnableViewState=true ViewStateMode=Enabled >
                <PanelContent>
                    <asp:DropDownList ID="DropDownList2" runat=server AutoPostBack=true EnableViewState=true ViewStateMode=Enabled>
                        <asp:ListItem>2014</asp:ListItem>
                        <asp:ListItem>2013</asp:ListItem>
                        <asp:ListItem>2012</asp:ListItem>
                    </asp:DropDownList>
                </PanelContent>
            </juice:AccordionPanel>
        </AccordionPanels>
    </juice:Accordion>

A想不通为什么。放置在 Accordion 之外的同一页面上的任何 DropDownList 都按预期运行。

[2014-02-25 更新]

DropDownList 有问题的解决方法：https ://dl.dropboxusercontent.com/u/18478143/JuiceUIDriveMeCrazy.zip