How to customize day cells in telerik iOS calendar (xamarin)?

See more:

C#

Telerik

iOS

Xamarin

I'm trying to customize day cells on Telerik calendar in view mode flow (that's essential). It works perfectly in other views, but it doesn't with flow view.

What I have tried:

I've tried implementing CalendarDelegate and overriding DidNavigateToDate method, but it is not called for cellType == TKCalendarCellType.Day. It is called for DayName and Title though (although I don't need these).

Is it a bug in Telerik, or am I missing something?

A code chunk that might be useful to illustrate the problem:

calendar.ViewMode = TKCalendarViewMode.Flow;
calendar.Delegate = new MyCalendarDelegate();

...

class MyCalendarDelegate : TKCalendarDelegate
{
    public override TKCalendarCell ViewForCellOfKind(TKCalendar calendar, TKCalendarCellType cellType)
    {
        return cellType == TKCalendarCellType.Day ? new MyDayCell() : null;
    }
}