JabRef version 5 on Mac OS X 10.14 <!-- IMPORTANT NOTE -> <!-- Please always test if the bug is still reproducible in the latest development version. We are constantly improving JabRef and some bugs may already be fixed. You can download the development version at: http://builds.jabref.org/master/ Please make a backup of your library before you try out this version. If you already use a development version, ensure that you use the latest one. --> - [x] I have tested the latest development version from http://builds.jabref.org/master/ and the problem persists <!-- Add a clear and concise description of what the bug is. --> When copying something selected (like the key of the entry) from the bibtex source of an entry, it actually copies the whole entry. Steps to reproduce the behavior: 1. Copy something selected 2. Paste