Spurious "&" in APA version 7 preview

[crystalfp]

JabRef version

Latest development branch build (please note build date below)

Operating system

Windows

Details on version and operating system

JabRef 5.4--2021-10-04--bac8304 Windows 10 10.0 amd64 Java 16.0.2 JavaFX 17+18

Checked with the latest development build

• 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. Create a library containing the following entry:

@InCollection{Perlis1962,
  author    = {Perlis, Alan},
  booktitle = {{Computers and the World of the Future}},
  date      = {1962},
  title     = {The computer in the university},
  editor    = {M. Greenberger},
  location  = {Cambridge, MA},
  pages     = {180--219},
  publisher = {MIT Press},
}

2. Use the "American Psychological Association 7th edition" preview format
3. A spurious "&" appears in the preview:

Perlis, A. (1962). The computer in the university. In M. Greenberger (Ed.), & , Computers and the World of the Future (pp. 180–219). MIT Press.

4. This does not appears in IEEE and standard preview formats.

Appendix

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Log File

``` Paste an excerpt of your log file here ```

[Siedlerchr]

Hi, the CSL styles are coming from the citation styles repo and are rendered using an external library in JabRef, and from what I see others have the same problem michel-kraemer/citeproc-java#108
I guess it would make sense to describe the phenomen there as well
(JabRef is using the latest version)

[crystalfp]

Solved in JabRef 5.4--2021-12-14--851fa4b. Thanks!