Unverified50% confidenceFactExact time
"Functional regression" refers to the phenomenon in which previously working functionality is broken after a software update, typically stemming from code refactoring, dependency upgrades, or architectural changes.
1
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50%
Confidence
Long-term
Relevance
10/20/2026
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Related Claims
UnverifiedIn software engineering, a Breaking Change refers to any modification that causes existing code or configuration to no longer function in its original manner.76% similarVerifiedA changelog is a document that records the changes included in each version release, typically covering categories such as new features, bug fixes, performance improvements, and breaking changes.71% similarUnverifiedA regression defect refers to a previously working function breaking after new code is submitted.70% similarUnverifiedThe approach of calling the software's internal functions through reverse engineering is version-sensitive: software upgrades will change internal function signatures or memory layout, and the original calling method may directly fail, requiring reverse engineering again.68% similarUnverifiedModel version upgrades are not always linear improvements; new versions sometimes exhibit capability regressions on certain specific tasks.67% similar
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