Thank you for linking that article (note to future users – the link has a trailing comma that must be stripped to be valid; alternatively, click here).  It looks like that's the issue, in which case it doesn't look like a future macOS update will fix anything.

I'm using 3 virtual printers with Horizon Client – two physical HP LaserJet printers, and one print-to-pdf printer driver (RWTS-PDFwriter).  None of them are working in Horizon Client under Sonoma (though they work fine when printing locally).

The workaround in the article involves server-side configuration changes.  I'm just an end-user, and while I'll pass this along to IT at my organization, I can't imagine it'll be a quick (or even realistic?) fix.

Is it correct to say that this issue cannot be resolved with a future update to Horizon Client?