That has indeed fixed the issue.

Thank you.

Hello Rob,

Thank you for reporting this.

I have asked our engineering staff to examine this further.  To ensure that it will receive attention, I have logged this behavior   in our internal tracking system with a Development ID of 211537. A support case is created on your behalf with number CAS-167962-J9L7C3, so that you can be notified when the bug is fixed.

You can find your active cases under Account - Support Activity in our website. Select your ticket and go to Development Issues tab to view the status of related bugs.

Let me know if I may be of further assistance.

Best Regards,
Marina Stoyanova,
Software Developer,
Infragistics, Inc.

Actually, I was looking at an existing website when I said IE11 and FireFox work.

Neither of them work in VS2013 in development mode with the new control.

Here is a stand alone example, you will need to either create a master page or add a head and body section to the aspx page.

aspx code:

<%@ Page Title="" Language="C#" MasterPageFile="~/recorderWeb.master" AutoEventWireup="True"
    CodeBehind="DropDownExample.aspx.cs" Inherits="PimaRecorderWeb.DropDownExample" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <asp:ScriptManager ID="sm" LoadScriptsBeforeUI="true" runat="server" EnablePageMethods="true">
    </asp:ScriptManager>
    <div style="width: 95%; margin: auto; text-align: right;">
        <br />
        <h2 style="text-align: center">Drop Down Example</h2>
        <br />
    </div>
    <div class="container">
        <div style="height: 18px">
        </div>
        <div style="text-align: center">
            <asp:Panel ID="panSearch" Style="background-color: #465a89; width: 540px" runat="server">
                <ig:WebDropDown ID="ddBookType" runat="server" Width="280px"
                    DropDownContainerHeight="0px" DropDownContainerMaxHeight="150px" PageSize="0"
                    AutoFilterTimeoutMs="20" Font-Bold="True" Font-Names="Verdana" Font-Size="8pt"
                    Height="25px" Button-Visible="True" AutoFilterResultSize="50"
                    EnableAutoFiltering="Client" EnableViewState="False"
                    ValueField="InstTypeID" TextField="Description">
                    <DropDownItemBinding TextField="Description" ValueField="InstType" KeyField="InstType" />
                    <DropDownItemBinding KeyField="InstType" TextField="Description" ValueField="InstTypeID" />
                </ig:WebDropDown>
            </asp:Panel>
        </div>
        <br/>
        <div style="text-align: center">
            <asp:Panel ID="panMap" Style="background-color: #465a89; width: 540px" runat="server">
                <ig:WebDropDown ID="ddMapType" runat="server" AutoFilterResultSize="50" AutoFilterTimeoutMs="20"
                    AutoPostBack="false" AutoSelectOnMatch="False" Button-Visible="True"
                    DropDownContainerHeight="0px" DropDownContainerMaxHeight="400px" EnableAutoFiltering="Client"
                    EnableCustomValues="False" Font-Bold="True" Font-Names="Verdana" Font-Size="8pt"
                    Height="25px" PageSize="0" Width="229px">
                    <Items>
                        <ig:DropDownItem Text="Maps and Plats" Value="1" />
                        <ig:DropDownItem Text="Record of Survey" Value="2" />
                        <ig:DropDownItem Text="Road/Highway Maps" Value="3" />
                    </Items>
                    <ClientEvents />
                </ig:WebDropDown>
            </asp:Panel>
        </div>
    </div>
    <br />
</asp:Content>

aspx.cs code:

using System;
using System.Linq;
using System.Web.UI;
using Infragistics.Web.UI.ListControls;

namespace PimaRecorderWeb
{
    public partial class DropDownExample : Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                // Fill ddBookTypes item list
                ddBookType.Items.Add(new DropDownItem("", ""));
                string[] bookTypes = { "1-DEEDS", "3-MILITARY DISCHARGES", "6-MORTGAGEES", "9-DOCKET (MORTGAGE RELEASES", "13-MORTAGORS" };
                foreach (string[] bookData in from getBook in bookTypes where !string.IsNullOrEmpty(getBook) select getBook.Split('-'))
                {
                    ddBookType.Items.Add(new DropDownItem(bookData[1], bookData[0]));
                }
            }
        }
    }
}

web.config code:

  <system.web>
    <sessionState mode="InProc" cookieless="false" timeout="30" />
    <identity impersonate="false" />
    <authentication mode="Forms">
      <forms name="subscriberCookie" loginUrl="~/Login.aspx" timeout="20" slidingExpiration="true" defaultUrl="~/SubscriberDocServices/DocResearch.aspx" />
    </authentication>
    <compilation debug="true" targetFramework="4.5">
      <assemblies>
        <add assembly="System.Design,                              Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
        <add assembly="System.Windows.Forms,                       Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="Infragistics45.Web.v15.1,                   Version=15.1.20151.2320, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
        <add assembly="Infragistics45.WebUI.Documents.Excel.v15.1, Version=15.1.20151.2320, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
        <add assembly="Infragistics45.WebUI.Documents.Core.v15.1,  Version=15.1.20151.2320, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
        <add assembly="Infragistics45.WebUI.Shared.v15.1,          Version=15.1.20151.2320, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
      </assemblies>
    </compilation>
    <customErrors mode="RemoteOnly" />
    <httpRuntime targetFramework="4.5" />
    <pages>
      <namespaces>
        <add namespace="System.Web.Optimization" />
      </namespaces>
      <controls>
        <add tagPrefix="cc1" assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" />
        <add tagPrefix="ig" namespace="Infragistics.Web.UI.GridControls" assembly="Infragistics45.Web.v15.1, Version=15.1.20151.2320, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
        <add tagPrefix="ig" namespace="Infragistics.Web.UI.EditorControls" assembly="Infragistics45.Web.v15.1, Version=15.1.20151.2320, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
        <add tagPrefix="ig" namespace="Infragistics.Web.UI.NavigationControls" assembly="Infragistics45.Web.v15.1, Version=15.1.20151.2320, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
        <add tagPrefix="ig" namespace="Infragistics.Web.UI.ListControls" assembly="Infragistics45.Web.v15.1, Version=15.1.20151.2320, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
        <add tagPrefix="a" namespace="Infragistics.Web.UI" assembly="Infragistics45.Web.v15.1, Version=15.1.20151.2320, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" />
      </controls>
    </pages>
  </system.web>

Your correct about the browser, I usually test in Chrome (version 47.0.2526.106 m).

The dropdown are not working in Chrome.

However, the dropdowns are working correctly in IE11 and FireFox.

I’m using Version=15.1.20151.2320 of the web controls.

I also down loaded 15.2 of Infragistics but it didn’t seem to make any changes to my web.config.

I will attempt to created a sample page with two dropdowns that displays the problem in Chrome.