Opensource.com - https://opensource.com/article/18/6/life-cycle-software-bug
In 1947, the first computer bug was found—a moth trapped in a computer relay.
If only all bugs were as simple to uncover. As software has become more complex, so too has the process of testing and debugging. Today, the life cycle of a software bug can be lengthy—though the right technology and business processes can help. For open source software, developers use rigorous ticketing services and collaboration to find and mitigate bugs.