This comes out of RAD-39. That task wasn't appropriately scoped and there are some additional improvements that can be made.
Add an 'x' in the top right to manually close a popover
Add a key to trigger display of the collection popover
Add a mouse press to display the collection popover?
At the moment the collection dialog is only displayed when the player enters the cell. Manual control would be good. Part of the task here will be to assess a good way of providing this to the user.