The common failure mode is commit messages proudly proclaiming they fixed a bug that they did not. And linking knock-on bugs created by their fixes to one bug.

Maybe I’m weird that way. I’ve had too many coworkers who don’t really even look at annotations to remind themselves why this code was written in the first place. They will just yolo and hope nobody ties the problems back to them. But once you’ve dealt with an irate customer who waited impatiently for a bug to be fixed, and only to have the bug be reintroduced a short time later, you may become more circumspect about bug fixes.

There’s often a refactor needed to fix multiple bugs at once. There’s often refactor can open up new feature opportunities, or performance improvements.