I worked in a place where it happened. If you dismiss that, it speaks to your experiences, not to mine. In my current job, it's not quite possible, the developer setup just isn't as mature yet, and it takes a few days. But at least I can aspire to do better. Of course, on your first day, you don't implement a new feature, but a small, well selected bug fix with a clear suggestion of how to fix it already contained in the ticket, is still possible. Also, of course, if you have a 2-month release cycle, it also doesn't work, so this story is from a team with a working Continuous Delivery practice.