Export to PDF/PPTX from Service changes custom font

I have my app using a theme with the Roboto font.  It shows effectively in the Service on both Mac and PC when Roboto is installed on the individual laptops.  Regardless of OS, when I export to PDF or PPTX, the results show in Times New Roman.  My organization's font is Roboto, which is a web-safe font.  I need the font to remain Roboto on export.

I reviewed two previous posts but neither offered a solution.  Can you please assist?

https://community.powerbi.com/t5/Service/Export-to-pdf-or-power-point-from-power-bi-service-font-family/m-p/2319470 

https://community.powerbi.com/t5/Service/The-font-changes-when-the-report-is-exported-in-PPT-PDF-from-the/m-p/917650

I do see on https://learn.microsoft.com/en-us/power-bi/collaborate-share/end-user-pdf?tabs=powerbi-desktop   "Reports using themes with custom fonts will have the custom font replaced with a default font.  "  
At a bare minimum, can I default it to a specific default font (other than Times New Roman)?

@font service @export