Having a strange issue where there's lots of texts & icons/buttons missing on sites I log in to on my Mac with Firefox - for example the dashboards of my Wordpress sites, the dashboard of my webhost, the dashboard of my anti-virus software.... They all work fine when I access them on other devices so it seems to be my Firefox browser or the Mac itself. But same thing is happening when I try using Safari on my Mac. Is it an issue with these browsers not allowing a certain script to work? I downloaded Chrome to try it there and they work fine! Thoughts? Apple could not figure it out...