Originally Posted by: Jane 
There seems to be a bug - we will get it fixed ASAP and the book will then appear on your Bookshelf.
The book has appeared on shelf! 😀
Much to the annoyance of my computing science/software engineering colleagues I have a penchant for finding programming bugs.One old boss used to hate it when their latest documentation dropped on my desk and I immediately spotted a technical error in what they wrote. They never learned to give it to me to proof read first but instead had reprographics run off a hundreds of copies.