Wiki's references are books from the 2000s. Sorry, the term has been around way longer than that - we had this term locked down in the 70s, and that's certainly

Wiki's references are books from the 2000s. Sorry, the term has been around way longer than that - we had this term locked down in the 70s, and that's certainly not the proper usage. Regression only happens when you fix a specific bug and re-introduce it in later code revisions. If it happens the first time, it's just a bug. If you fix it and it happens a second time, THEN it becomes a regression.