JabRef 5.0-dev--snapshot--2018-11-26--master--89d4d745c
Linux 4.18.0-2-amd64 amd64
Debian Linux buster
Java 1.8.0_191

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

After clicking on the read-status (the eye symbol) column header I would expect the following order: unread, skimmed, read (or in decreasing order: read, skimmed, unread). While unread seems to be always grouped and at the top/bottom the skimmed and read entries seem to be unsorted:

Steps to reproduce the behavior:

1. Mark some entries as read, skimmed, unread
2. Click on the column header read-status