JabRef version on
JabRef 5.3--2021-04-13--ed2b096
Linux 5.4.0-71-generic amd64
Java 15.0.2
JavaFX 16+8

• [x ] Mandatory: I have tested the latest development version from http://builds.jabref.org/main and the problem persists

The character encoding in the "bibtex source" display isn't UTF8, or else doesn't use a fully-populated Unicode font.

Steps to reproduce the behavior:

1. Enter data in Devanagari script
2. Display the plain bibtex source
3. The script is gobbledegook