JabRef version

Latest development branch build (please note build date below)

Operating system

Windows

Details on version and operating system

JabRef 6.0-alpha.4--2025-12-25--a706fab Windows 10 10.0 amd64 Java 24.0.2 JavaFX 25.0.1+3

Checked with the latest development build (copy version output from About dialog)

• I made a backup of my libraries before testing the latest development version.
• I have tested the latest development version and the problem persists

Problem:

(Non-standard) entry type depicted with wrong required fields after switching tabs in entry editor

Steps to reproduce the behaviour

How to reproduce:

1. add entrytype as "legal"

   @Legal{EuropaeischeUnion20160607cvo,
     date             = {2016-06-07},
     title            = {Consolidated Versions of the Treaty on European Union and the Treaty on the Functioning of the European Union},
     comment          = {http://data.europa.eu/eli/treaty/tfeu_2016/art_2/oj
   https://eur-lex.europa.eu/legal-content/DE/TXT/?uri=celex:12016
   https://eur-lex.europa.eu/DE/legal-content/summary/division-of-competences-within-the-european-union.html
   TFEU - Artikel 2: Aufteilung der Zuständigkeiten in der Europäischen Union; Competences of the European Union},
     creationdate     = {2026-01-28},
     file             = {:JabRefBibLinkedFiles/EuropaeischeUnion20160607cvo  (2016-06-07) Consolidated Versions Treaty 1--366.pdf:pdf},
     groups           = {Entry Import},
     institution      = {Europäische Union},
     journal          = {Official Journal of the European Union},
     language         = {English},
     modificationdate = {2026-01-31T12:18:06},
     number           = {202},
     pages            = {1--366},
     series           = {C},
     url              = {https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex:12016},
     volume           = {59},
   }
   

2. Switch from "Required fields" to "{ } Biblatex source"
3. Switch back from "{ } Biblatex source" to "Required fields"

Before:

After:

Appendix

No response