Source Sans Pro 4 does not render correctly in Firefox 1.1.1 for Windows and Android · Issue #6138 · google/fonts · GitHub

Issue loading the site in Firefox Nightly (57) · Issue #1135 · google/fonts · GitHub

Font name changed from Source Sans Pro to Source Sans 3 / Source Serif Pro to Source Serif 4 · Issue #233 · adobe-fonts/source-sans · GitHub

Bad font rendering in Firefox - Newbie - EndeavourOS

Poor rendering of Source-Sans on Windows · Issue #2232 · google/fonts · GitHub

Opening page as html code instead of rendering it, Firefox Support Forum

Bad font rendering in Firefox - Newbie - EndeavourOS

success:false,error:ENOENT: no such file or directory, stat '/opt/render/project/src/frontend/build/index.html'} - Render

Bad font rendering in Firefox - Newbie - EndeavourOS

How to Fix Sec_Error_Bad_Signature Error in Firefox

SourceSansPro-regular not correctly rendered · Issue #1088 · diegomura/react-pdf · GitHub

PDF won't render · Issue #16197 · mozilla/pdf.js · GitHub

Firefox 21: New Social Providers, Open Source Fonts on Android