Bold not working on desktop Chromium-based browsers

[KaKi87]

Hi,

The following is what I see on desktop Chromium-based browsers :

Even on a fresh Chromium install without any customization whatsoever.

The following is what I see in DevTools :

Here's the screenshoted CSS rule :

b, strong {
    font-weight: var(--base-text-weight-semibold, 600);
}

The URL to the file containing that rule (https://github.githubassets.com/assets/node_modules/@primer/css/primitives/temp-typography-tokens.scss) returns 404 and I don't know why.

But, when disabling that rule, bold works properly :

Also, I'm not experiencing this issue on mobile Chromium-based browsers, nor on desktop and mobile Firefox-based browsers.

I know this repo isn't GitHub support, I just would like some community feedback : am I the only one experiencing this ?

Thanks.