Publisher entered an infinite reconnect cycle without backoff after broker restart — fixed with exponential retry and connection health checks.

Requests to a downstream service failed silently because the orchestrator wasn't injecting a required environment variable at runtime.

An internal service was returning 401 for valid internal calls. Jobs were nacked and requeued indefinitely with no visible error surfacing to the user.

Event-driven autoscaling sent SIGTERM to workers processing active jobs. No graceful drain was implemented, leaving documents stuck in a processing state.

A tool returning document headings was including full section content alongside — saturating the context window on large documents and truncating responses.

Two chained bugs: an embedding queue timeout fired silently before headers were enqueued, and a downstream consumer overwrote the index type field — preventing correct routing entirely.

Frontend, backend, and inference layer each failed for unrelated reasons. Fixing one revealed the next: a missing stream subscription, an async type mismatch, then an insufficient token budget.

Short-lived auth tokens expired during idle periods with no background renewal. Returning to an open page after inactivity produced a network error instead of a transparent re-auth.