Hi Marc.
I completely agree. I actually found it via your comment in the FAST github issue (https://github.com/microsoft/fast/issues/3859).
I was looking to try your awesome-panel extension WebComponent framework to implement it. This is a step on the way.
This is what it looks like when served with pn.serve inside a HTML pane.
When clicking the frame an upload dialog should be initiated and drag an drop should also work. Neither works. The element is completely passive.
This is what it looks like when loaded as a foo.html file
This works. The drag and drop works. The upload dialog on click works and a neat animation while loading the file works. It is the exact same html body as the one in the HTML pane in the example above.
