I just wrote the article -- and use Firefox (and Waterfox on Linux). But... Really? I have never seen a single one go awry and for me it works better than Oku

I just wrote the article -- and use Firefox (and Waterfox on Linux). But... Really? I have never seen a single one go awry and for me it works better than Okular, Evince, etc. I routinely use it for completing electronic forms now, to the pleased surprise of the agencies issuing them. A typed form is always more readable than a hand-written one. Do you have some examples or steps to reproduce? Can I help with filing a bug?