rerender on selection

[germgerm]

My viewmodel contains an observable list of items and a single selected item
My view contains a conboboxbwith these bindings : itemsource= viewmodel list, selecteditem = viemodel selecteditem
there are also a number of controls with bindings to properties of the viewmodel selecteditem

the viewmodel selecteditem is initially set to a default item

initially the view displays correctly but when a selection is made, theviewmodel selecteditem is correctly updated but controls bound to selecteditem properties are not rerendered

I can understand that the bound values haven't changed even though the selecteditem has changed the old values are still the same

i tried wrapping things in a panel with datasource bound to the selecteditem - that had no effect

what am I missing ?

[germgerm]

is this just a dumb question ?

[rabbitism]

The description is just too abstract. Maybe you can prepare a minimal reproducible sample.