fdeboer (1) [Avatar] Offline
It might be nice if the book just briefly but explicitly touches the subject of Intent flags. Just to be aware of the fact that there are two ways to influence the Activity starting and stacking behaviour.

It does briefly mention the launch mode subject in paragraph 3.4.3. It suggests to read the current documentation. So launch mode was the actual keyword I started searching with. I know the book can't cover everything in it's full detail. But just mentioning this Intent Flag subject is enough to gain a better understanding and guide further searches.