JabRef version

5.15 (latest release)

Operating system

Windows

Details on version and operating system

No response

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

Steps to reproduce the behaviour

1. Set preference to true for "Hide tab bar when single library is present"
2. Create a new library
3. Change the preference to false.
4. Now in tab bar no tab is shown.