Oh hell yes. They made a mistake, try to fix it, and the problem was gone in the next iteration.
We have been suffering from the same MacBook Pro keyboard issues for 3 years, and the latest 2018 just released still has that keyboard problem. And to add insult to injury T2 now causes panic every now and then.
https://techcrunch.com/2010/06/24/iphone-4-antenna-issue/