Klaviyo change history: Customer Agent Follow Up Prompts not Appearing

Klaviyo reported a major Customer Agent Web Chat outage starting 2025-12-03 19:57 UTC, lasting 38 min and resolved at 2025-12-03 20:36 UTC. Missing follow-up prompts prevented users from continuing conversations or escalating to a human agent; SMS chat was unaffected. Klaviyo identified a recent change as the cause and restored prompts by reverting it.