• Electron version: 1.6.2
• Operating system: macOS 10.12.3

Actual behavior

I faced with strange behaviour of <input type='file' /> in Electron.
You can select special Macs' folders - app folders (for example /Applications/Calculator.app).
In Finder it looks like file, but it's directory!

Expected behavior

There are two possible ways.

1. Chromeway (and Safari). In real Chrome you can select Calculator.app from <input type='file' />. But Chrome transparently created Calculator.app.zip and attached this archive to input.
2. Firefox way. In Firefox you can not select any folders from <input type='file' />

How to reproduce

I have created simple fiddle for that https://jsfiddle.net/s7c7k33b/ for testing in different browsers and Electron