hello,
i searched for many threads in this forum about grid panel cell tool-tip,
in this example
http://examples.ext.net/#/Miscellane..._Cell_Tooltip/
everything is working fine but when you but the grid panel inside a tab-panel,counter,form panel .....or inside anything
then the tool-tip stop working,no errors in browser console , it just disappears.

as you see in these threads,everybody seems to use grid panel without putting it inside tab-panel or anything
https://forums.ext.net/showthread.ph...e-cell-on-grid
https://forums.ext.net/showthread.ph...244#post283244

so it works with them without any problem

anyone can help:

<%@ Page Language="C#" %>

<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!X.IsAjaxRequest)
        {
            this.Store1.DataSource = new object[]
            {
                new object[] { "حراااااااااااااااااااااااث", 71.72, 0.02, 0.03, "9/1 12:00" },
                new object[] { "Alcoa Inc", 29.01, 0.42, 1.47, "9/1 12:00am" },
                new object[] { "Altria Group Inc", 83.81, 0.28, 0.34, "9/1 12:00am" },
                new object[] { "American Express Company", 52.55, 0.01, 0.02, "9/1 12:00am" },
                new object[] { "American International Group, Inc.", 64.13, 0.31, 0.49, "9/1 12:00am" },
                new object[] { "AT&T Inc.", 31.61, -0.48, -1.54, "9/1 12:00am" },
                new object[] { "Boeing Co.", 75.43, 0.53, 0.71, "9/1 12:00am" },
                new object[] { "Caterpillar Inc.", 67.27, 0.92, 1.39, "9/1 12:00am" },
                new object[] { "Citigroup, Inc.", 49.37, 0.02, 0.04, "9/1 12:00am" },
                new object[] { "E.I. du Pont de Nemours and Company", 40.48, 0.51, 1.28, "9/1 12:00am" },
                new object[] { "Exxon Mobil Corp", 68.1, -0.43, -0.64, "9/1 12:00am" },
                new object[] { "General Electric Company", 34.14, -0.08, -0.23, "9/1 12:00am" },
                new object[] { "General Motors Corporation", 30.27, 1.09, 3.74, "9/1 12:00am" },
                new object[] { "Hewlett-Packard Co.", 36.53, -0.03, -0.08, "9/1 12:00am" },
                new object[] { "Honeywell Intl Inc", 38.77, 0.05, 0.13, "9/1 12:00am" },
                new object[] { "Intel Corporation", 19.88, 0.31, 1.58, "9/1 12:00am" },
                new object[] { "International Business Machines", 81.41, 0.44, 0.54, "9/1 12:00am" },
                new object[] { "Johnson & Johnson", 64.72, 0.06, 0.09, "9/1 12:00am" },
                new object[] { "JP Morgan & Chase & Co", 45.73, 0.07, 0.15, "9/1 12:00am" },
                new object[] { "McDonald\"s Corporation", 36.76, 0.86, 2.40, "9/1 12:00am" },
                new object[] { "Merck & Co., Inc.", 40.96, 0.41, 1.01, "9/1 12:00am" },
                new object[] { "Microsoft Corporation", 25.84, 0.14, 0.54, "9/1 12:00am" },
                new object[] { "Pfizer Inc", 27.96, 0.4, 1.45, "9/1 12:00am" },
                new object[] { "The Coca-Cola Company", 45.07, 0.26, 0.58, "9/1 12:00am" },
                new object[] { "The Home Depot, Inc.", 34.64, 0.35, 1.02, "9/1 12:00am" },
                new object[] { "The Procter & Gamble Company", 61.91, 0.01, 0.02, "9/1 12:00am" },
                new object[] { "United Technologies Corporation", 63.26, 0.55, 0.88, "9/1 12:00am" },
                new object[] { "Verizon Communications", 35.57, 0.39, 1.11, "9/1 12:00am" },
                new object[] { "Wal-Mart Stores, Inc.", 45.45, 0.73, 1.63, "9/1 12:00am" }
            };

            this.Store1.DataBind();
        }
    }
</script>

<!DOCTYPE html>

<html>
<head runat="server">
    <title>GridPanel Cell with ToolTip - Ext.NET Examples</title>
   

    <script>      
        var onShow = function (toolTip, grid) {
            var view = grid.getView(),
                store = grid.getStore(),
                record = view.getRecord(view.findItemByChild(toolTip.triggerElement)),
                column = view.getHeaderByCell(toolTip.triggerElement),
                data = record.get(column.dataIndex);
            toolTip.update(data);
        };
    </script>
</head>
<body>
    <form runat="server">
        <ext:ResourceManager runat="server" />
		 <ext:ToolTip
            runat="server"
            Target="={#{GridPanel1}.getView().el}"
            Delegate=".x-grid-cell"
            TrackMouse="true">
            <Listeners>
                <Show Handler="onShow(this, #{GridPanel1});" />
            </Listeners>
        </ext:ToolTip>
   <ext:TabPanel ID="userDocsTab" runat="server" Plain="true">
                        <Items>
        <ext:GridPanel
            ID="GridPanel1" rtl="true"
            runat="server"
            Title="Array Grid"
            Width="600"
            Height="350">
            <Store>
                <ext:Store ID="Store1" runat="server">
                    <Model>
                        <ext:Model runat="server">
                            <Fields>
                                <ext:ModelField Name="company" />
                                <ext:ModelField Name="price" Type="Float" />
                                <ext:ModelField Name="change" Type="Float" />
                                <ext:ModelField Name="pctChange" Type="Float" />
                                <ext:ModelField Name="lastChange" Type="Date" DateFormat="M/d hh:mmtt" />
                            </Fields>
                        </ext:Model>
                    </Model>
                </ext:Store>
            </Store>
            <ColumnModel runat="server">
                <Columns>
                    <ext:Column runat="server" Text="Company" DataIndex="company" Flex="1" />
                    <ext:Column runat="server" Text="Price" DataIndex="price">
                        <Renderer Format="UsMoney" />
                    </ext:Column>
                    <ext:Column runat="server" Text="Change" DataIndex="change">
                      
                    </ext:Column>
                    <ext:Column runat="server" Text="Change" DataIndex="pctChange">
                        
                    </ext:Column>
                    <ext:DateColumn runat="server" Text="Last Updated" DataIndex="lastChange" />
                </Columns>
            </ColumnModel>
            <SelectionModel>
                <ext:RowSelectionModel runat="server" Mode="Single" />
            </SelectionModel>
            <View>
                <ext:GridView runat="server" StripeRows="true" TrackOver="true" />
            </View>
        </ext:GridPanel>

       
		     </Items>
                    </ext:TabPanel>
    </form>
</body>
</html>