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Outgoing fetch trace propagation is broken on Bun #19322

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Outgoing fetch trace propagation is broken on Bun#19322
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chargome

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@chargome
chargome
opened on Feb 13, 2026

sentry-trace and baggage headers are not attached to outgoing fetch() requests. The OTel nativeNodeFetchIntegration does not intercept Bun's native fetch implementation, so distributed tracing across services does not work. The inbound request starts a new trace instead of continuing the caller's trace.

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  1. chargome
    self-assigned this
    on Feb 13, 2026

  2. linear commented on Feb 13, 2026

    @linear
    linearBot
    on Feb 13, 2026 – with Linear

    JS-1712

  3. chargome
    added a parent issue on Feb 13, 2026

  4. mydea commented on Oct 23, 2026

    @mydea
    mydea
    on Oct 23, 2026
    Member

    Fixed by #22869, which added outgoing fetch instrumentation (including trace propagation headers) to @sentry/bun as a default integration. Closing.

  5. mydea
    closed this as completedon Oct 23, 2026
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