I use Hangouts app on my Android device and Pidgin on my Windows PC. Until a few months ago, the notifications synchronized perfectly between the two applications. For instance, when I am actively using the Pidgin client to chat with a Hangouts contact, I don't get notifications on the Hangouts app. If someone pings me and I haven't responded for a certain period of time on Pidgin, I get the notification on Hangouts app. All good.
But recently, the notification synchronization is completely gone. Here I am actively using Pidgin for chatting and I keep getting annoying notifications on Hangouts for the same chat session. I cannot turn off Hangouts notifications, because then when I am on the go, I don't receive any notifications.
How can this be fixed? Has Google changed their API in a way that Pidgin can no longer "tell" Hangouts that "the user is with me right now, you keep quiet" ?