This is a reincarnation of T151037: Some recentchanges rows state the current user's IP address was registered.
When TranslateUserManager was introduced, we broke the deleting of these log entries since they are under a different user now. The deletion of rows from recentchanges and logging table must be amended. In addition need to figure out how to delete existing bad entries. The user id of the created user is stored as PHP serialized string in the log_params field, which is not possible to query against.