Hello,
Not sure if it's only with a calendar note, but twice now, I've created a note from my calendar in the Home page, and while I've been able to type in tasks and notes, the tasks have just disappeared twice. The only fix I found was to erase the tasks in what I'll call the "calendar template" and start from scratch on the page. It's a minor annoyance, but definitely something that for some reason is not working right.