Thanks for reporting. Yes, I know this bug and it’s something that I plan to change in the new release.
Just want to add that the new version of Old Gregg theme would be much different. I’m making new design for it but the functionality would be much the same, plus there would be new features. E.g., yesterday I finally added the back-end support for most viewed articles. Although it will take some time but I believe the results will worth it.
If you are planning to make changes in the theme (not the JATS Parser Plugin), e.g., creating a child theme, I suggest to wait until new release.