Dear Allan Muzilla,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
You are correct that hidden channels no longer send notifications. With the launch of this new feature, notification suppression for hidden channels, users will now only receive notifications for personal and tag mentions from these hidden channels. This enhancement is designed to improve the user experience by allowing them to stay on top of their most relevant conversations.
However, you can still receive notifications for conversations within hidden channels that you start or participate in by enabling notifications for each conversation individually. Unfortunately, there isn’t a global setting to override this behavior and automatically receive notifications for conversations you start or participate in within hidden channels.
The workaround you mentioned—using the three-dot menu to enable notifications for specific conversations—is currently the best method available. While it might be a bit inconvenient, it ensures you don’t miss important updates in those conversations. If you’d like to see a global setting for this feature, you might consider providing feedback to Microsoft through the Teams app, you may submit your concern to the Microsoft Admin Center under feedback or create a UserVoice request for the feature on our Microsoft Teams · Community. They often take user feedback into account for future updates.
I hope this helps! Let me know if you have any other questions. Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution. Thank you for your cooperation.