Hi,

When the first day of the week is changed dynamically through a custom IntlService, the Calendar weekday headers are updated, but the date cells are not repositioned. (The first day is changed as described in your guide: https://www.telerik.com/kendo-angular-ui/components/knowledge-base/calendar-first-day )

Reproduction (forked from your example): https://stackblitz.com/edit/angular-tqvypgwg
Click on "Set first day to Monday ": the weekday headers are updated to start with Monday, but the date cells remain in their previous positions.

Best regards,
Michael