Tasks from a deleted list are not synced with Outlook

Hello,  I'm not sure if this is a bug or intended behavior

When creating a new list in Teams and adding tasks inside it, it will sync with Outlook as expected but if you delete the whole list folder, the tasks created inside the list will stay in the Outlook even though all the tasks already deleted with deleting the list folder

To reproduce this : 

1. Create a new list in the Tasks app in Teams
2. Add tasks inside the list 
3. Check if the tasks synced with Outlook
4. Delete the list folder
5. Tasks from the deleted folder will stay in Outlook tasks 

Regards,

Ahmed