JabRef 4.0-beta3
Linux 4.11.0-0.bpo.1-amd64 amd64 on Debian 9 Stretch AMD64
Java 1.8.0_141

Steps to reproduce:

1. Launch TeXworks and JabRef
2. Select a bibliographic item
3. Click on "Send to LaTeX editor"
4. Nothing appens

In settings LaTeX editor is set to default /usr/bin/texworks.

Thank you very much in advance.