I am using JabRef version 5.0 on Windows 10.
I would like to change the default BibTeX key pattern. I go to Options -> Preferences -> BibTeX key generator, double click on the field I want to change and enter the pattern that I want. But as soon as I click Save, the pattern reverts to the default pattern.
Is there some kind of permissions issue? Everything is installed using the default methods on the local system.