What changed
Reads of this field return undefined, and the failure surfaces wherever that value is used rather than at the call.
Affects workers-observability_agent_session reachable from 1 operation.
Who is affected
Code that reads Cloudflare's workers-observability_agent_session objects, used by 1 Cloudflare operation.
Before and after
| Where | Before | After |
|---|---|---|
| workers-observability_agent_session.spanCount | present | absent |
Code that breaks
// response.spanCount is now undefined const spanCount = response.spanCount;
Based on Cloudflare’s published API specification. How severity is decided.