ISSUE: Screenshot of this issue can be seen at https://goo.gl/c9WriW Also, a video of this can be seen at https://goo.gl/d4nnKq This issue occurs in Lightweight or Mobile render mode. In classic render mode, this issue does not exist. HOW TO REPRODUCE: Use the following page markup to reproduce this problem. <%@ Page Language="C#" AutoEventWireup="true" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <telerik:RadScriptManager ID="RadScriptManager1" runat="server"> <Scripts> <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js"></asp:ScriptReference> <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js"></asp:ScriptReference> <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js"></asp:ScriptReference> </Scripts> </telerik:RadScriptManager> <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" RenderMode="Lightweight" Skin="MetroTouch"> <TargetControls> <telerik:TargetControl ControlID="RadFormDecorator1" /> </TargetControls> </telerik:RadSkinManager> <telerik:RadFormDecorator ID="RadFormDecorator1" runat="server" DecoratedControls="All" RenderMode="Lightweight" ControlsToSkip="None" /> <select id="ddl2" runat="server" style="width: 175px;"> <option value=""></option> <option value="dallas">Dallas</option> <option value="chicago">Chicago</option> <option value="toronto">Toronto</option> <option value="austin">Austin</option> </select> <button id="btn1">Postback</button> </form> </body> </html> RESOLUTION: Add the following style in your aspx head part based on the skin you are using for FormDecorator. If skin is any one these big skins - MetroTouch or BlackMetroTouch or Material or Silk or Glow or Bootstrap, then use the style below. <style> div.rfdSelectBox ul li { min-height: 16px; } .rfdSelect { min-height: 32px !important; } </style> For all other skins, use the style element as below. <style> div.rfdSelectBox ul li { min-height: 16px; } .rfdSelect { min-height: 32px; } </style> </head>