When a Window is not focused, clicking on a DropDownList in the Window results in the DropDownList not gaining focus

[aleksandarevangelatov]

Bug report

When a Window is not focused, clicking on a DropDownList in the Window results in the DropDownList not gaining focus and the popup opening and immediately closing.
This is a regression introduced with v2021.1.119

Reproduction of the problem

1. Run this dojo
2. Click outside of the Window, so it loses focus
3. Click on the DropDownList

Expected/desired behavior

The DropDownList should gain focus and the popup should remain open as in v2020.3.1118

Environment

• Kendo UI version: 2021.1.119
• Browser: [all]

[Iankodj]

Related to: #6248