Encountering Several bugs with the Embed Api

To add some additional details for you.  I have narrowed down that it's my code that is causing problems but I'm uncertain why.  

I am trying to use the PREVIEW_SELECTION_END event in conjuction with the previewApis to getSelectedContent in order to get the current selected content after it has been selected (since the PREVIEW_SELECTION_END event only returns quadpoints / bounding boxes that cant be referenced back to content).

It would be ideal for the PREVIEW_SELECTION_END to also return back the current selected content.  I think it would make that event more useful since the bounding boxes that are returned currently can't be used to determine the content that they refer to.

// ... more initialization code above    

const previewApis = await preview.getAPIs();
const viewEventHandler = (evt: AdobeDC.ViewCallbackResponse) => {
  console.log("SELECTION END", evt);
  // the following line is causing problems
  previewApis.getSelectedContent().then(({ data: selectionData }) => {
     console.log("selection Data", selectionData)
  });
}

adobeSdk.registerCallback("EVENT_LISTENER",
  viewEventHandler, {
    listenOn: [
       "PREVIEW_SELECTION_END"
    ],
    enableFilePreviewEvents: true
});