If you load an issue page, you'll see 1 failed request to:

    /project/product/issues/<number>

And sure, that's what you care about, but consider the working requests to:

    /in-product-messaging/copilot-budget-request-banner
    /in-product-messaging/code-scanning-ai-findings-preview-banner
    /github-copilot/chat
    /_private/browser/stats
    

See, only 20% requests failed!