Toolbar causes an error when using kendo-toolbar-dropdownbutton with ngIf/ngFor

[destus90]

Description

When you have a tool under ngIf directive, toolbar will throw an error in the browser's console.

Steps To Reproduce

1. Go to https://stackblitz.com/edit/angular-jv9hm3-24qd4a?file=src%2Fapp%2Fapp.component.ts
2. Check the browser's console.

Screenshots or video

No response

Actual Behavior

Error is thrown

Expected Behavior

No error

Browser

Chrome

Browser version

latest

OS type

Windows

OS version

No response

Last working version of the Kendo UI for Angular package (if regression).

No response

[mbechev]

The reported error is also reproduced when using ngFor:

<kendo-toolbar>
      <kendo-toolbar-dropdownbutton *ngFor="let item of items" [text]="item.text" [data]="data">
      </kendo-toolbar-dropdownbutton>
</kendo-toolbar>

https://stackblitz.com/edit/angular-532tbn-mfz3hx

[dtopalov]

Seems to apply for kendo-toobar-dropdownbutton, kendo-toolbar-button and kendo-toolbar-splitbutton work as expected.