A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Can you have a look at the topic here and specially at the solution provided by Jai Mallesh Babu - https://answers.microsoft.com/en-us/msoffice/fo...
Right click on one note in systray icon, in menu, select one note icon defaults and select "open OpenNote" as default
If it doesn't help I suppose it's by design.