I've mentioned this problem before as a reply, but because of the misspelled thread title, I guess this remains unfindable
https://forums.macrumors.com/threads/macos-bog-sur-11-6-2-impressions.2327559/post-30732345
But I think for some professionals this information might be important/relevant...
Has anyone else noticed that pdf files using CMYK colours are now rendering properly whereas previously the colours were garish at best or inverted at worst (google "iOS cmyk pdf" to see complaints)? I'm guessing this is new in 9.3 but perhaps I just haven't been paying attention.
This is huge...