"Dirty" pixels on the object [closed]

  

I use Delphi 10.3.3 and firemonkey.
I have TCircle object on the Form.
After compilation under Win32, white pixels appear on some objects (but not always).
How to get rid of it?

I paste all the code below

interface

uses
System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs;

type
TForm3 = class(TForm)
Circle1: TCircle;
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form3: TForm3;

implementation

{$R *.fmx}

end.

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