Kendo UI not displaying correct icons

[sir sappalot]

Hello!

We got the issue that icons are not displayed correctly inside our kendo ui components.

We followed the styling tutorial Styling & Themes - Overview - Kendo UI for Angular (telerik.com) and Overview - Icon - Kendo UI for Angular (telerik.com).

We are using Kendo 11.3, kendo-theme-bootstrap 7.0.2 (also installed default theme), kendo-font-icons ^2.0.0

We also imported inside styles.scss:

@import '@progress/kendo-theme-bootstrap/scss/icons/_index.scss';
...
// kendo-angular-dropdowns
@import '@progress/kendo-theme-bootstrap/scss/autocomplete/_index.scss';
@import '@progress/kendo-theme-bootstrap/scss/combobox/_index.scss';
@import '@progress/kendo-theme-bootstrap/scss/dropdownlist/_index.scss';
@import '@progress/kendo-theme-bootstrap/scss/dropdowntree/_index.scss';
@import '@progress/kendo-theme-bootstrap/scss/multiselect/_index.scss';
...
@import '@progress/kendo-font-icons/dist/index.css';

 

The result of a dropdown box is in the image, it shows the wrong icon for the arrow down symbol.
Has anyone had this issue before and can somebody help please?

Thank you for your time