I just upgraded from version 4.33.3 to 5.3.1. Right away I notice that it seems the base font size was modified to be smaller. It also feels like the base font family was also changed. My site was setup "just so" and now I'm forced to, as much as possible, fix the layout of the site.
Checking against backups, it doesn't seem that either the font-size or font-family was actually changed, but something sure did.
Why were changes to very base settings made, and what exactly was changed?