Selected on item does not work

[Polyterative]

when declaring an item, selected is never listened to. It always puts the first item as selected no matter what I set (trueor false).

I rebuild the drawer on each activity change (even if I know that fragments are better, bear with me) taking care to set selected on the item in relation to the Activity i'm building. Still it does not work.

Demo

Code

        drawer {
            toolbar = localToolbar
            onClosed { drawerClosedStream.onNext(0) }
            primaryItem(R.string.title_activity_tracking) {
                onClick { _ ->
                    drawerClicksStream.onNext(AppConstants.Activities.TRACKING)
                    false
                }
                selected = origin == AppConstants.Activities.TRACKING
            }
            divider { }
            primaryItem(R.string.title_activity_manager) {
                onClick { _ ->
                    drawerClicksStream.onNext(AppConstants.Activities.MANAGER)
                    false
                }
                selected = origin == AppConstants.Activities.MANAGER
            }
            primaryItem(R.string.title_activity_pin_manager) {
                onClick { _ ->
                    drawerClicksStream.onNext(AppConstants.Activities.PIN)
                    false
                }
                selected = origin == AppConstants.Activities.PIN
            }
            divider { }
            secondaryItem(R.string.title_activity_settings) {
                onClick { _ ->
                    drawerClicksStream.onNext(AppConstants.Activities.SETTINGS)
                    false
                }
                selected = origin == AppConstants.Activities.SETTINGS
            }
            secondaryItem("Help") { selectable = false }
            footer {
            }
        }