I work on a product with a side navigation bar on the left side of the screen (for tablets). It functions like a Navigation bar. We have been asked to implement a feature so that if a user is away from the "main" tab for more than 10 seconds (without any touch inputs), we should automatically swap them back to the main tab.
While using the app, I've noticed this auto nav switching felt jarring to me on several occasions. I've also never seen any other app do this, but I couldn't find anything official about it in any mobile guideline docs.
So, are there any official Android/iOS guidelines about automatically switching nav bar selection for a user?