Entity Reference Select List for paragraph only shows last item in a list

I have a view that gets values from a series of paragraphs in a node. The view works, and shows a list of all of the values for a field, in each of the paragraphs.

I have an entity reference view, based on the above, that also shows the multiple items returned by the view.

In another node, I have included an Entity Reference field and set this to get values from the Entity Reference View above. This field is presented to use as a Select List.

When creating a node, the Select List only shows the last item returned by the Entity Reference View.

I have tried this on a clean install of Drupal, but it will never show anything but the last item returned from the View.