Without seeing your particular scenario, what might be happening is that you have a property which may be defined on a fieldvalue control which is NOT auto-generated.
This custom control generates a select element with options.
As per dirty check logic, any one of the below conditions should match.
Any one of the option should be marked as defaultSelected.
i.e - optionElement.defaultSelected becomes to TRUE at runtime
First option should be selected by default. In this control’s markup generation(for the first time, where no value is selected) neither of these conditions are matching.
i.e - Everything
If your application code in UserWorkForm has a script which has an impact on the native date&time controls for offline-enabled mobile UI which are not prefilled you will see this issue.
That is why the previous user suggested that you add refresh section code in the user work form after setting the property values.
Please check how the product works as per our documentation: