Can't see the Creator of the task

When I go into the Tasks app of Planner and To Do in my MS Teams, I click on "Assigned to me" on the tasks. But there I don't see at the bottom who assigned me the task. It says "Unknown" there. When I go into the shared Planner, I see the creator.
But in the web version of Planner it works! There, under my tasks, I can see directly who assigned me the task.
Will this be corrected?