I do not know if it is a feature or an issue. Maybe I am not seeing this situation as I should. My problem is that I have Hangouts on my Mac at home with Chrome Extension (Mac OS X 10.10), at my office PC with Chrome Extension (Elementary OS (Ubuntu based)) and in my phone (iPhone 5 with iOS 8.1.3); and everytime someone writes me on Hangouts I receive the notification on these 3 devices. I find a bit annoying that when I am at the office chatting on Hangouts, my phone keeps ringing/vibrating because of notifications. Plus, at home anyone using the Mac can see the notifications and the conversation.
It is not a matter of "privacy" (not that I do not want anyone at home reading my Hangouts). It is a matter of "annoyance". Shouldn't it stop sending notifications and just send it to the last one being used or the active one? Is this an issue that just I am experiencing? What am I doing wrong?