Bug report

This is a regression introduced in R1 2020. To reproduce it, set a menu button within a splitButton as initially hidden. Then show it with the ToolBar's show API method.

Reproduction of the problem

Dojo example.

1. Open the browser's dev tools console and run the example.

Current behavior

"btn2" is shown as expected, but a js exception is thrown:

kendo.all.js:91805 Uncaught TypeError: Cannot read property 'refresh' of undefined

Expected/desired behavior

No js exceptions

Environment

• Kendo UI version: 2020.2.513
• jQuery version: x.y
• Browser: [all]