Achieve combobox behavior for react-bootstrap-typeahead

I’m trying to use the react-bootstrap-typeahead control but I’m struck trying to make it do what I want. I’ve actually got 2 of these on my page, one of which is doing a true async lookup, and one which I almost want to behave like a combobox. What I’d like to be able to do is to select an item, then click the dropdown to change my mind and choose another item. However if you try this, when you expand the list again it’s automatically filtered to just the item you have selected. For example if I use the basic