Last Updated: 03 Apr 2024 20:07 by ADMIN
Created by: Muhammad Jamil Nawaz
Comments: 1
Category: AutoCompleteBox
Type: Bug Report


We have a problem in our application, where when the user is typing the text to the input field of auto completed. After pressing "@" the text starts shaking. I tried to reproduce the same issue with online demo.


Use render mode Classic.


In the render mode Lightweight, the text is always shaking but in the Classic render mode, when the "@" typed, the text is shaking. 

The customer reported this as production issue in our application. Please suggest the solution of this asap.


Last Updated: 24 Jun 2022 13:31 by ADMIN
Last Updated: 22 Jun 2022 10:20 by ADMIN
Last Updated: 31 Oct 2019 15:33 by David

I have an AutoCompleteBox that cuts off the last letter of the default message.

This only happens on load and in Mozilla FireFox.

After the user focuses the AutoCompleteBox and loses focuses the full default message is available.

It seems that this is related to the inability of FireFox to handle the size property of the input elements. On initial load, the input is sized by setting the size property of the input. 

A possible workaround would be calling the internal _updateInputSize method in the OnClientLoad event of the AutoCompleteBox: 

function OnClientLoad(sender, args) {
    if (Telerik.Web.Browser.ff) {

Last Updated: 28 Oct 2019 21:02 by Jeff


While JAWS will announce all of the items in the list as results are first read, it only says "Blank" as you arrow through the available options. Tabbing out of the control and back in, also does not read the selected content.

This is basically the opposite of what happens when ARIA support is turned off.


In that case, there is no announcement when results come back, but JAWS will read each individual item as you arrow through the available choices. Tabbing out of the control and back in still does not cause JAWS to read the selected item. 

This makes it seem like the ARIA version of the autocomplete box is missing either the appropriate ARIA roles or some other piece of rendered markup that is present in the non-ARIA-enabled version.


Ideally, when working with screen readers,  we would like to see something like the following behaviors:

* The number of items are announced when results are loaded, including empty results

* Each item is announced as the focus is moved through the list

* The selected item is announced when picked or whenever focus returns to the field. 

Last Updated: 06 Sep 2018 07:42 by ADMIN
Error message: "Unable to get property 'get_index' of undefined or null reference"

Video: https://www.screencast.com/t/SmoOmyopjOJg

Steps to reproduce:
1. Open http://demos.telerik.com/aspnet-ajax/autocompletebox/examples/default/defaultcs.aspx

2. Search for item in the Tone-enabled AutoCompleteBox

3. Choose an item from the result

4. Delete the token

5. Press Backspace

Result: A JS error is thrown:

"Unable to get property 'get_index' of undefined or null reference"
Last Updated: 09 Jul 2018 12:47 by ADMIN
A workaround is to disable the embedded jQuery and use an older version (for example, 1.11.1 which is the previous version the suite used): https://docs.telerik.com/devtools/aspnet-ajax/controls/scriptmanager/disabling-the-embedded-jquery

Repro steps:

- add the dropdown
- write something

expected: you see the suggestions

actual: the suggestions go off the screen to the left

        <telerik:RadAutoCompleteBox ID="companyNameSelector" runat="server"
            EnableDirectionDetection="true" EnableScreenBoundaryDetection="true" DropDownWidth="400px"

    protected void Page_Load(object sender, EventArgs e)
        companyNameSelector.DataTextField = "someColumn";
        companyNameSelector.DataSource = GetDummyData();

    protected DataTable GetDummyData()
        DataTable tbl = new DataTable();
        tbl.Columns.Add(new DataColumn("id", typeof(decimal)));
        tbl.Columns.Add(new DataColumn("Name", typeof(string)));
        tbl.Columns.Add(new DataColumn("moreData", typeof(decimal)));
        tbl.Columns.Add(new DataColumn("someColumn", typeof(string)));
        tbl.Rows.Add(new object[] { 1, "one", 2, "firstRecord4" });
        tbl.Rows.Add(new object[] { 2, "two", 3, "secondRecord4" });
        tbl.Rows.Add(new object[] { 3, "three", 4, "thirdRecord4" });
        tbl.Rows.Add(new object[] { 98, "four", 5, "fourthRecord4" });

        return tbl;
Last Updated: 04 Oct 2016 15:21 by ADMIN
Last Updated: 01 Aug 2016 15:54 by ADMIN
Last Updated: 09 May 2016 14:39 by FG Developer
Last Updated: 07 Mar 2016 12:35 by ADMIN
Won't Fix
Last Updated: 21 Jan 2016 17:02 by ADMIN
Created by: Hristo Valyavicharski
Comments: 2
Category: AutoCompleteBox
Type: Bug Report

Last Updated: 19 Jan 2016 12:03 by ADMIN
Last Updated: 08 Jan 2016 16:56 by ADMIN
Last Updated: 03 Jul 2015 10:57 by ADMIN
Last Updated: 26 Mar 2015 09:00 by RAJASEKHARA
Last Updated: 10 Dec 2014 16:49 by ADMIN
Created by: Hristo Valyavicharski
Comments: 0
Category: AutoCompleteBox
Type: Bug Report

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