Very odd. If you drag the zip onto your laptop and the drop event listener doesn't pick up on it, your browser would likely just "download" the zip you dropped. Which explains what you see I'm guessing. What I'm not sure about is why the JS doesn't pick up on the drop event and process the file. Do you have any settings that would block JS? What browser are you using?
I tried in latest versions of FF and CH and it does not work (on Windows10). When I drag the ZIP archive to the area it does not do anything. Do all people just try on MAC or why it does not work for me?
Still not working for me. The drag+drop area shows a "Click to Download" button so it's registering the dropped folder, but when I download it there's nothing different about the folder.
Yes this is a known 'issue': https://github.com/textileio/textile-facebook/issues/2. Unfortunately, some browsers don't like large files being dragged-and-dropped like this. The 'solution' for now seems to be to unzip on your computer, remove the messages folder, re-zip, and try again. This should reduce your zip file significantly.
Let me know if that helps at all. We're working on a more permanent fix for this in the mean time.