Hey there!
We've started integrating Dropbox Chooser into our product. It a nice and easy to integrate from a developer's perspective - thanks!
We've gotten quite a few tickets regarding an unresponsive Dropbox Chooser modal. Digging a bit I quickly realized that the modal was not unresponsive - it was just doing some thinking.
In cases where a user selects quite a few files the POST request made to `https://www.dropbox.com/dropins/share` takes quite some time. I guess behind the scene you're generating direct links for each file. For non-technical users it seems like the modal is stuck.
Could you please add small loading indicator on the choose button while you're collecting the links?

Best regards