UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

Steps to reproduce the problem:
1. Visit https://codepen.io/jacekbogdanski/pen/aqmBze
2. Copy an image file into clipboard from file system explorer.
3. Paste copied file from explorer into contenteditable area using ctrl/cmd + v combination.
4. Check Images Count value.

What is the expected behavior?
Expected images count: 1. clipboardData should have information about image from clipboard.

What went wrong?
Image count: 0. clipboardData doesn't contain information about pasted file.

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 63.0.3239.132  Channel: n/a
OS Version: 10
Flash Version: 

It works fine on OSX.