We believe the issues outlined in this thread have been resolved. If you experience any other issues with the Checklist, please start a new thread for visibility.
Thanks for your feedback!
-The Planner Team
An error occurred while saving the commentjoeljjones commented
I have this happen to me all the time. I also noticed that i'll update one Task that has a Checklist and then get out and then when I come back, those Checklist items are in another completely separate Task. It's weird and very very annoying.
Copy task is now available in Planner! To use, click on a task’s details menu and select “Copy task”.