windows vista - Weird font in Firefox - Super User

I'm having this problem where my fonts in Firefox changed to this weird ugly bold one and I can't seem to change it. My font settings are exactly the same as they are on my other computer and that

Firefox displays strange characters instead of normal text in certain sites., Firefox Support Forum

Pinned Tabs - keep favorite websites open and just a click away

encoding - Firefox Garbled Text - Super User

Measuring up Windows 7's new “super” taskbar

Firefox shows only numbered squares instead of any fonts on local PC, Firefox Support Forum

Firefox 56.0.1 is causing fonts issue. Fonts are looking fuzzy and I tried whatever I can do it to fix it but the problem won't go away., Firefox Support Forum

Microsoft fixes 5-year-old Windows Defender bug that was killing Firefox performance

How to Fix Default Fonts Problem on Firefox – GOEDEV

Strange loading error in Firefox (Drupal site shows loading bar at top of browser) - Stack Overflow

Garbled text when setting let websites choose their own font enabled, Firefox Support Forum

FireFox font is unreadable and thin, Firefox Support Forum

Firefox For Dummies by Blake Ross - Ebook

Firefox 91 release overview: new ESR base, Simplified Printing, new HTTPS-First Policy - gHacks Tech News

Here is what happens when you try to install and run unsupported browsers on Windows 7 - gHacks Tech News

Mozilla installs Scheduled Telemetry Task on Windows with Firefox 75 - gHacks Tech News