Test how resilient is the drag'n drop flow

Some of our customers use Nuxeo Drive this way:

• They sync a folder
• In this folder there is a file , let's say a PSD or a powerpoint, that they copy on a local folder not managed by Drive.
• They work on this document for a while;
• then, when they are happy with their work, they open the Finder in the sync folder where the original file is and they drop the working copy in their.
• Finder asks if user should do a copy or replace.
• User selects replace.

Expected behaviour: Drive updates the document on the Nuxeo server appropriately.

Observed behaviour: on some laptops, the file is correctly updated on the original document, on some others, a second document is created.