What are Regression Issues?

Source: Dev.to

In very simple terms

• You fix or add one thing, and another existing feature stops working.
• That unexpected break is a regression.

Simple example

• Login feature is working fine.
• A developer adds a new password‑reset feature.
• After the change, users can no longer log in.

The login problem is a regression issue.

Why regression issues happen?

• Code changes affect shared logic
• Dependencies are modified
• Configuration changes impact existing behavior
• Bugs are introduced during refactoring

How regression issues are detected?

Through automated regression testing, which:

• Re‑runs existing tests after every code change
• Confirms old features still work
• Runs automatically in CI pipelines

Role in DevOps and CI

In Continuous Integration:

• Every code change triggers automated tests
• Regression tests catch issues early
• Problems are found before reaching production

This saves time, money, and outages.