For example I have 2 shapes.
Tehy borh have 2 pieces. It looks normal when I preview it with a normal zoom.
But when I zoom out look what happens.

They dont look same. I tried the reasons one by one and see that it happens because of level of the shapes. I mean when i select the tiny part and press down arrow for both shapes they look same. But it still has a problem. They never look correct. The tiny part always look bigger or smaller when I zoom out but never look correct.
I drew another object. this time shapes are not seperated. I select the whole area for creating the orange part.
This solve the issue. The third shape look good when I zoom out.
Now my question is, isnt it meaningless to render shapes like this? They should look same for both 3 ways. Why first 2 way return wrong results?