JabRef version JabRef 5.0-beta.342--2020-01-15--58709e7 Linux 5.3.0-26-generic amd64 Java 13.0.2 on Ubuntu 19.10

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

Steps to reproduce the behavior:

1. The "Copy DOI link" (actually the whole context menu for the URL column) is no more visible/accessible in the entry list
2. Also can't find this menu item under "Copy ..." (where I thought it went after migrating from JR 4 to 5)
3. The menu entry "Copy -> Copy bibtex key and link" does not seem to copy anything to the clipboard. The validation message anyway shows that only the key was copied.

This is probably not a bug but I thought it is tiny enough to include it as an issue.