Safari doesn’t let you tab to radio buttons or checkboxes…because of an OS setting!?!?
WHY would this be a default?
For that matter, why selectively turn off tabbing to them at all?
https://www.scottohara.me/blog/2014/10/03/link-tabbing-firefox-osx.html
They’ve finally changed it in Catalina (which I don’t have on my work system), but it’s apparently been a thing since at least the early 2000s.
It’s a perfect example of an “unbreak my app” setting.
Probably some ancient UI guideline from 1986 when the idea that someone might want to use the keyboard for something in the UI would garner a “why don’t you just use DOS, loser?” reaction