New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Incorrect Positioning of Controls


RadWindow, RadTooltip, RadCombobox, RadToolbar and a dragged node from a RadTreeView are shown in the wrong location.

In scenarios with special positioning on a parent element of the Telerik control (absolute, fixed, relative or margin:auto), you may experience appearance problems with incorrect positioning and side effects as explained below. This can include direct parents or even high-level elements like the <body> or <form>.

  • RadWindow is rendered at unexpected location of the screen.

    The gray modal overlay behind the window does not extend to the boundaries of the screen.

    The top of the window is offset from the cursor when the dialog is moved across the page.

    Incorrectly Positioned RadWindow Overlay and Cursor

  • RadTooltip appears at a wrong location if the parent container(s) or the form has applied "position:fixed|relative".

    Incorrectly Positioned Tooltip

  • RadCombobox pop up appears away from the input control.

    RadCombobox PopUp Incorrect Position

  • RadToolbar's dropdown popup appears further down the page, offset from the dropdown button.

    Dropdown Popup Incorrect Position

  • RadTreeView dotted line, which appears while rearranging or moving a node, could either appear in incorrect position or not appear at all.

    Incorrect Dotted Line Position


All problems demonstrated above are due to special positioning of the body, form, or another parent element of the Telerik control.

Popup elements from the Telerik UI for ASP.NET AJAX suite are often rendered as direct children of the <form> or <body> element and such special positioning can offset them unexpectedly, even to the point where they are not in the visible viewport of the page.

What can be done to solve this problem, is to

  1. check within the project for global and inline CSS rules such as position:absolute, position:fixed, position:relative, margin:auto, top, left

  2. if they exist, do either of the following:

    • fully remove them.
    • OR, move the special positioning from the <form|body|parent element> to another element that is not a parent of the AJAX control.
      For example put all the content/layout in a <div> inside the form:
    <!DOCTYPE html>
    <html xmlns="">
    <head runat="server">
        html, body, form, .myScollContainer {
            margin: 0;
            padding: 0;
            height: 100%;
            overflow: hidden;
        .myScollContainer {
            overflow: auto;
            /* add other rules as necessary, like position, margin, etc. */
    <form id="form1" runat="server">
        <div class="myScollContainer">
            <telerik:RadScriptManager runat="server" ID="rsm1" />
           everything else goes here

    Tip: You can use the browser dev toolbar to inspect the rendered HTML in order to see where the Telerik control renders, what its parents are and what CSS is applied to them.

    See Also

In this article