and the additional information I forgot to put in my post: how do I revert to version 91? (I tried right-clicking and going to the versions tab in properties but there were no previous versions available there)

Make sure you allow pages to choose their own fonts. *Settings -> General: Fonts & Colors -> Advanced<br>[X] "Allow pages to choose their own fonts, instead of your selections above" If you use uBlock Origin make sure not to "block remote fonts". If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, DuckDuckGo PE, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content. *make sure your extensions and filters are updated to the latest version *https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems Firefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content. You can click shield icon for more detail and possibly disable the protection. You can check the Web Console for related messages about blocked content. *https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop *https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection *https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track

cor-el for the win! The fonts thing was the issue. Many thanks.