The forum now uses Arial instead of Source Sans Pro like before the maintenance on the Vincent theme.
I am using Firefox 80.0 (latest version).
Edit: It seems that it’s not only the Vincent theme, other people have also reported unexpected font changes.
Note that the theme is in the “broken-theme” category though, so I’m not sure if it’s still maintained. If it is not, we would probably end up removing it from the forum.
Can you check if this happens for you on meta.discourse.org, if yes then you can report it directly to Discourse there, if not it would be great if you could provide any more details.
It doesn’t happen on Meta, only on here. What details should I provide for example?
EDIT: Seems like the issue was fixed on here, I am getting no issues with the default theme on here.
It’s still happening with the vincent theme though.
Another thing is that even before the maintenance, when the page was first loaded, it appeared using Arial font for a split second before getting replaced with Source Sans Pro.
The font issue is a .font-helvetica class on the html element being more specific than vincent’s CSS rule for the html element, which results in Vincent’s font getting overridden. Presumably Discourse changed this recently. If you’re very bothered, it can be fixed by using this CSS in a custom stylesheet with a browser extension.
html {
font-family: "Assistant", sans-serif !important;
}