Invalid parameter on change day on calendar day view

Navigate to a calendar.
Change to day view. Wait until all requests are finished otherwise it will use the html link to navigate.
Go next day.

I think this is what happen: Year and month may not be get on reloadCurrentMonth. So the call of core_calendar_get_calendar_monthly_view has empty parameters.
Also I think this function is been called from the calendar three months fake block.
However this is only an intuition.