If your job is to solve the situation, your best hope is to figure out what change caused it; understand that change; and then do whatever needs to be done.

In a large complicated application where a change to the environment revealed a crash, finding out what changed in the environment and thinking about how that affects the application makes a lot more sense than going back through application changes to see if you can find it that way.

Once you figure out what the problem is, sure you can probably fix it in the application or the environment, and fixing the application is often easier if the environment is Chrome. But chrome changed and my app is broken means look at the changes in Chrome and work from there.