Binding Source Control Datasource property not responding at design time. VS

I am trying to bind an object to the data source property of a Binding source control but when I click on the property at design time in VS 2019, nothing happens. There seems to be some type of activity because the pc freezes for a short while then nothing happens. Trying this on the same project but different VS version 2017, different machine, brings up the data source dialog, allows to navigate to the data object, select it but the data source property remains empty. It does not attach the object.