Assign Task to Not memeber without add them as Member
Why assign a task to someone add that person to team? why Microsoft do no allow add task to people that are not part of the team, that person should be able to work with the task assigned to him but not add access to all the Team. It is like in Outlook you create a task and assign it to "Genaro" and automatically "Genaro" get access to all your mail to be able to work in that task.
We need separate permission.