Why are users seeing tasks they are not assigned to under the "assigned to me" list using mgt-planner component?

Question

I decided to add the mgt-planner component as a small widget on a view in our application, all appears fine until I found out others are seeing my tasks (and other peoples tasks) under the "assigned to me" list, obviously the tasks they are seeing have not been assigned to them as they have not been added to these tasks?

I am a little stumped with this, surely users should only be able to see tasks to which they have been actually assigned?

When I look at the "assigned to me" in MS Teams, those tasks which are assigned to others are not listed like they are with the mgt-planner component.

Also, when I call the graph API directly using the Me.Planner.Tasks.GetAsync() tasks which I am not assigned to are not included in the results.

Thanks in advance..