User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Steps to reproduce:
- Uncheck "Allow pages to choose their own fonts, instead of your selections above".
- Go to https://www.divergent-desktop.org/blog/2020/10/29/improving-x/
The text on some web sites, like the one above, do not look like the text on most other sites with serif fonts.
The ligatures should be consistent across sites. I don't know about others' use case, but for me the only reason to disable custom fonts is to have a consistent reading experience across all sites.