Delegate Method popupStoreLibWasClosed(_ controller: PopupStoreController) not called

[3DTOPO]

With 1.0.8, the close button works (sends a popupStoreLibWasClosed() message) before the user hits continue, or after a purchase has been made, but not on the option screen, circled red:

The only way to handle that button is by using:
open func popupStoreEventWasEmitted(_ controller: PopupStoreController!, withEvent eventName: String!, withPayload payload: [AnyHashable: Any]!)

and checking for:

if eventName.contains("userCancelStore") { popupStoreLibWasClosed(controller) }

With 1.0.7 and before, that button would send a message to the delegate and handled with:

popupStoreLibWasClosed(_ controller: PopupStoreController)