it's not a bug, it's a feature phrase3 •What one user may consider a software bug, other users may consider to be a useful feature or an intentional consequence of the system's design. •Affirms the validity of a counterintuitive behavior within a system; it is by design.One annoyance, or maybe it’s one of those “it’s-not-a-bug-it’s-a-feature” situations, is the gearshift. — 1999 •(humorous) A self-deprecating response when confronted by a bug in the software that one is authored or is introducing to another user.