An error is thrown when you move all ListBox items

[martintabakov]

Bug report

When moving all the items from the right ListBox to the left, an error is thrown on the console.

Regression with 2022.3.1109

Reproduction of the problem

1. Open this Dojo example - https://dojo.telerik.com/onazUkoT/9
2. Open the console.
3. Move all the items from the left ListBox to the right

Workaround:

kendo.ui.ListBox.ToolBar.fn._focusTool = function() {
          if(this.element) {
            this.element.find(".k-button").not("[tabindex=-1]").trigger("focus");
          }
        };

Current behavior

An error is thrown.

Expected/desired behavior

No errors should be thrown.

Environment

• Kendo UI version: 2023.3.1114
• Browser: [all]