[Inf-IT DAVcl] (Android) Tasks widget update problem

I have a task that is due, and it is displayed by the task widget with a standing out (red) date.

I want to postpone it, so using CalDAVzap I change the date to somewhen in the future.

The modified task is correctly synched to Android, but the widget does not update.

The screenshots show 1) the task widget on the home screen, and 2) the task data when clicked on the task widget.

-- Johan