In our application we use ListBox with property EnableMarkMatches set. When we enter a search criteria with the keyboard you see in the selected rows the search criteria Bold. (See attached screenshot)

When u click with the mouse on this bold search criteria you get an error message in the console of the browser:

 

RadListBoxScripts.js:1223 Uncaught TypeError: Cannot read properties of null (reading 'get_enabled')

    at c.RadListBox._onClick (RadListBoxScripts.js:1223:6)

    at HTMLLIElement.<anonymous> (RadListBoxScripts.js:476:4)

    at HTMLDivElement.dispatch (jQuery.js:3:12445)

    at r.handle (jQuery.js:3:9174)

 

This issue is reproducible at

https://demos.telerik.com/aspnet-ajax/listbox/examples/functionality/keyboardsupport/defaultcs.aspx?

We are using List box item scroll into view to scroll to the item selected in the list box. However, the scroll is not working in the Chrome browser in a UHD touch screen laptop device.

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:

1. put a listbox on the page
2. configure it so it does postbacks (e.g., on selection changed, or any other feature)
3. ivnoke said postback (e.g., select an item)

Expected: the action is carried off

Actual: Firefox throws TypeError: access to strict mode caller function is censored

Sample markup

        <telerik:RadListBox runat="server" ID="rlb1" OnSelectedIndexChanged="rlb1_SelectedIndexChanged" AutoPostBack="true">
            <Items>
                <telerik:RadListBoxItem Text="first" Selected="true" />
                <telerik:RadListBoxItem Text="second" />
            </Items>
        </telerik:RadListBox>

When there are few checkbox items in RadListBox (i.e. there is no scroll bar), checked items cannot be unchecked. The issue is reproducible in iPAD.