Second this. A few years back I wrote a chapter for a book and then the editor screwed up. With one of the other authors, we took on editing and fixing things around.

As I had seen so many versions of it, my chapter was the one on which I could do the less editing around -- I was absolutely tired of it. Lo a behold, the book gets published, I get a physical copy on my hands, and I start seeing typos and small mistakes around. Nothing too serious, but things that I would've fixed.

I know those mistakes are there. Only a handful of people have pointed them out. Those people have not only read the book, the followed it and questioned it. It's nice to be reached out, even if I already know what's wrong.