JabRef version 5.0 on Windows 10 and Ubuntu 16.04

• I have NOT tested the latest development version from http://builds.jabref.org/master/ but I have not found any other Bug report for this problem.

The "Recent libraries" list within the File menu displays the filenames of recently opened .bib database files, but if any of those filenames include an underscore, the underscore is not shown.
For example, the database Bug_List.bib will be be displayed as BugList.bib.

Strangely, clicking on the entry BugList.bib within the Recent Libraries list will (correctly?) open the database file Bug_List.bib, so the problem must simply be related to how the filename is displayed within the Recent Libraries list.

I did not observe this problem with JabRef 4.3.1, or any earlier version.

Steps to reproduce the behavior:

1. Create a minimal .bib database file, and name it Bug_List.bib
   This .bib file need contain only a single entry.
2. Open Bug_List.bib within JabRef 5.0.
   The name in the Tab above the main table will correctly show the filename Bug_List.bib
3. Look at the entries in the File/Recent libraries menu.
   The most recent library will be listed as BugList.bib