Buffered upstream work continues after the client disconnects, so a cancelled request can still incur provider cost.
Routing-tier attribution is missing from GET /v1/stats and /metrics for LLM-classifier judge failures that route to the default target, escalation decisions, and stage_router fallback decisions.
The retry recovery counter stays at zero after a successful upstream retry.
x-switchyard-session-id is not recorded in native session stats.
The native server does not send the documented X-Switchyard-Version header upstream.