Usage Ping configuration bug for self-managed instances

This post details a bug in Usage Ping configuration for self-managed instances that prevented disabling Usage Ping via text configuration files, leading to unintended data collection and transmission. A patch release (13.12.4) was published to fix this bug. The issue affected GitLab versions 9.3 to 13.12.3. Users who suspect data was shared are asked to fill out a form for data purging.