<@U10EJRH2L> `UIComponent` has `internal fun callO...

# tornadofx

[edvin]

@Ruckus UIComponent has internal fun callOnUndock() for that purpose, but it might not be needed. I haven't looked at your new implementation yet, but if UIComponent.muteDocking is triggered, that would prevent the normal undock call from reaching the UIComponent. Could that be the case? In normal circumstances just changing the parent of the view root would trigger the undock call.