Question about the displayed area

Hello,

I have a question. I have drawn a track as the boundary of a large area. However, when I zoom out, I see an area that I did not draw myself.

The blue line shows the correct boundary of the area. As you can see, the track line cuts off a part of the area when zoomed out. When I zoom in further, the track and the area appear to be correct again.

Because of this, I cannot properly see the entire correct area when zoomed out.

How can I make sure that the complete area is displayed correctly when I zoom out? Or am I perhaps doing something wrong?

I hope you understand what I mean. 😊

Thank you in advance!