JabRef 5.0.0-dev--2019-10-29----3b6c355ae
Linux 5.0.0-32-generic amd64
Java 12.0.2

• [X ] I have tested the latest development version from http://builds.jabref.org/master/ and the problem persists

Steps to reproduce the behavior:

1. open Preferences/Entry Editor
2. set Default drag & drop action to "Link file (without copying)"
3. The file nevertheless is renamed using the bibtex key.