Microsoft Login Page not using correct font, even though they're installed

Hello! I installed the Microsoft fonts (tried multiple ways, including copying them all from Windows into /usr/share/fonts), but the login page still doesn’t the correct font - is there anything else I need to do? I’m using Firefox, Fedora 40 and Wayland (in case this matters)
grafik

Looking at it in developer tools, it doesn’t render correctly either I think?
grafik

The font is available for me in LibreOffice though:
grafik

Is this one of those cases where flatpak isolation/sandboxing could be working against the user?

No, I’m not using the Flatpak version of Firefox
grafik

Have a look in the Firefox settings for fonts and try to select there the Microsoft font. If it shows correct you know that the system recognizes it.

Or fist open a private window in firefox an see if you get same result on the Microsoft login.

It shows up in the font selection, yeah. And the incorrect font shows up both in regular and private windows.

There must been some cached data or a css entry where still uses the alternative font for the Microsoft page.

Looks like you’re right! This doesn’t happen in a new profile.

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You could look for the default css from the new profile and move it to the old one. So you not loose the session cookies you have stored.

Okay, nevermind - it was something completely different! I had strict mode enabled in Firefox’ privacy settings, this apparently disables access to local fonts!

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