JabRef 5.1--2020-03-10--d5ee20b Windows 10 10.0 amd64 Java 13.0.2 In the settings I deactivated the "create backup file while saving" option. I also deleted the `*.sav` file from the filesystem. But the `sav`file is still created when **starting** JabRef. When closing JabRef it is gone. **EDIT**: The behaviour is not always reproducable. But please see the attached video which contains different behaviours. [6092.zip](https://github.com/JabRef/jabref/files/4313103/6092.zip) Makes no sense for me.