[stephenr]

This type of app really bites us (users) in the ass when we try things real Mac apps have done literally for decades - drag and drop. Drag a file expecting it to be accepted as an upload, but oh wait no, the web view navigated to view that file. And I have no back button so I have to quit the app.

[totallynotcool]

That's an issue as most webviews can ad a bit of js and support that feature. I'd email the dev a bug report.

[wingerlang]

CMD + arrow left works