Unbold Subtotals

Is there any way to unbold the subtotals in Power BI? On the microsoft support page it says that this should be possible through changing the "boldlabel" class in the json file, but that does not work. This really shouldn't be a big issue.

https://docs.microsoft.com/de-de/power-bi/create-reports/desktop-report-themes

Microsoft Support Reference: "... However, if you don’t like the inheritance rules (for example, if you don’t want your totals to be a bolded version of the values in a table), you can explicitly format the secondary classes in the theme file, just like you can format the primary classes..."