A startup launched cloud-based agile and DevOps training modules, but QA failed to inspect them before deployment, causing a poor customer experience. Which issue is the project manager facing?

An escaped defect is a defect that was not detected during the quality assurance (QA) process but was found by the end-user or customer after the product or service was released. In this scenario, the training modules were deployed without proper QA inspection, leading to a poor customer experience, which directly indicates an escaped defect. A nonconformance issue is a broader term for any deviation from requirements or standards, but "escaped defect" is more specific to defects found post-release. An unmet planned-to-done ratio relates to project progress and completion rates, not quality. An undetected error is similar to an escaped defect, but "escaped defect" specifically implies it bypassed internal quality checks and reached the customer.