Google is making some changes to the way you’re notified of incoming messages in Google Chat Spaces. Until recently, you were notified of messages in threads in Spaces even if you weren’t following them. But now, the notification settings have a few options that let you configure when you’re notified.
How to Fix Notifications Not Working in Google Chat
With the rollout of the new notification options, the default notification settings for Spaces will change to "Main Conversations," which will include posts in the main conversations and replies to threads you're following.
But if you want to stay on top of all messages and threads and be visibly notified as they come in, you’ll have to make the change yourself. Here’s how to fix this if you find yourself missing messages that you thought you’d be (visibly) notified about. Basically, you’ll need to ask Google Chat to notify you of all messages in a room — and you’ll need to do this for every room you’re in.
Here's how to update your notification settings in a Google Chat room to get a visible notification of every message. Remember, you'll need to do this for every room you're a part of to receive all messages from that room.