delphi - メイン フォームがフォーカスを失ったときに TTitleBarPanel がネストされたパネルに重なる

Question

Delphi 11 Alexandria の Windows 10 で 32 ビット VCL アプリケーションを実行すると、最初は正常に見えます (メインメニューが非表示になっていることを除く)。

しかし、ウィンドウがフォーカスを失うとすぐに、TTitleBarPanelOVERLAPS pnlHeaderTPanel ( a内にネストされたTCard):

しかし、ドキュメンテーションが言うように、私はやったTTitleBarPanel.

この重複をどのように回避できますか?

ユニットは次のとおりです。

unit Unit1;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.ExtCtrls, Vcl.Menus,
  Vcl.TitleBarCtrls, Vcl.WinXPanels;

type
  TForm1 = class(TForm)
    MainMenu1: TMainMenu;
    menuitemOptions: TMenuItem;
    menuitemPreferences: TMenuItem;
    menuitemAbout: TMenuItem;
    pnlHeader: TPanel;
    TitleBarPanel1: TTitleBarPanel;
    CardPanel1: TCardPanel;
    Card1: TCard;
    Panel1: TPanel;
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

end.

そして、ここにフォームがあります：

object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 294
  ClientWidth = 515
  Color = clSilver
  CustomTitleBar.Control = TitleBarPanel1
  CustomTitleBar.Enabled = True
  CustomTitleBar.Height = 34
  CustomTitleBar.BackgroundColor = clWhite
  CustomTitleBar.ForegroundColor = 65793
  CustomTitleBar.InactiveBackgroundColor = clWhite
  CustomTitleBar.InactiveForegroundColor = 10066329
  CustomTitleBar.ButtonForegroundColor = 65793
  CustomTitleBar.ButtonBackgroundColor = clWhite
  CustomTitleBar.ButtonHoverForegroundColor = 65793
  CustomTitleBar.ButtonHoverBackgroundColor = 16053492
  CustomTitleBar.ButtonPressedForegroundColor = 65793
  CustomTitleBar.ButtonPressedBackgroundColor = 15395562
  CustomTitleBar.ButtonInactiveForegroundColor = 10066329
  CustomTitleBar.ButtonInactiveBackgroundColor = clWhite
  DoubleBuffered = True
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -12
  Font.Name = 'Segoe UI'
  Font.Style = []
  GlassFrame.Enabled = True
  GlassFrame.Top = 34
  Menu = MainMenu1
  Position = poScreenCenter
  StyleElements = [seFont, seClient]
  PixelsPerInch = 96
  TextHeight = 15
  object TitleBarPanel1: TTitleBarPanel
    Left = 0
    Top = 0
    Width = 515
    Height = 34
    CustomButtons = <>
    ExplicitWidth = 608
  end
  object Panel1: TPanel
    Left = 0
    Top = 34
    Width = 515
    Height = 260
    Align = alClient
    BevelOuter = bvNone
    TabOrder = 1
    ExplicitTop = 33
    ExplicitWidth = 608
    ExplicitHeight = 296
    object CardPanel1: TCardPanel
      Left = 0
      Top = 0
      Width = 515
      Height = 260
      Align = alClient
      ActiveCard = Card1
      BevelOuter = bvNone
      Caption = 'CardPanel1'
      TabOrder = 0
      ExplicitTop = 34
      ExplicitWidth = 608
      ExplicitHeight = 355
      object Card1: TCard
        Left = 0
        Top = 0
        Width = 515
        Height = 260
        Caption = 'Card1'
        CardIndex = 0
        DoubleBuffered = True
        ParentDoubleBuffered = False
        TabOrder = 0
        ExplicitWidth = 608
        ExplicitHeight = 355
        object pnlHeader: TPanel
          Left = 0
          Top = 0
          Width = 515
          Height = 32
          Margins.Left = 100
          Margins.Top = 0
          Margins.Right = 150
          Margins.Bottom = 0
          Align = alTop
          Alignment = taLeftJustify
          BevelOuter = bvNone
          Color = 16443110
          Font.Charset = DEFAULT_CHARSET
          Font.Color = clGrayText
          Font.Height = -19
          Font.Name = 'Segoe UI'
          Font.Style = []
          ParentBackground = False
          ParentFont = False
          TabOrder = 0
          ExplicitWidth = 608
        end
      end
    end
  end
  object MainMenu1: TMainMenu
    Left = 320
    Top = 192
    object menuitemOptions: TMenuItem
      Caption = 'Options'
      object menuitemPreferences: TMenuItem
        Caption = 'Toggle Preferences'
        ShortCut = 123
      end
      object menuitemAbout: TMenuItem
        Caption = 'About'
        ShortCut = 121
      end
    end
  end
end