The issue is not reproducible with the following setup:
<asp:MultiView ID="TileMultiView" runat="server" ActiveViewIndex="0">
<asp:View ID="HomeTileView" runat="server">
<uc1:HomeTileControl runat="server" ID="HomeTileControl" />
</asp:View>
<asp:View ID="View1" runat="server">
<uc1:AccountsTileControl runat="server" ID="AccountsTileControl" />
</asp:View>
</asp:MultiView>
If there are more than one persistent managers on the page they should have unique UniqueKey properties.