RAD Studio 10.4 IDE - Click on "New Items" error occurred when IDE Theme is Disabled

RAD Studio 10.4 IDE - Click on "New Items" error occurred when IDE Theme is Disabled

Steps to invoke:

Edit Windows Registry key in HKEY_CURRENT_USER\Software\Embarcadero\BDS\21.0\Theme

Change value from Enabled="00000001" to Enabled="00000000" <- REG_DWORD

Launch RAD Studio

Click on "New Items"

Then this error occurred.

[2102719B]{designide270.bpl} IDETheme.Utils.SetTitleBarColors_VCLStyles (Line 128, "IDETheme.Utils.pas" + 5) + $B
[50E56832]{vcl270.bpl  } Vcl.Forms.TForm.ArrangeIcons (Line 8245, "Vcl.Forms.pas" + 1) + $14
[50E5D8CF]{vcl270.bpl  } Vcl.Forms.TTitleBar.SetEnabled (Line 12966, "Vcl.Forms.pas" + 18) + $2
[20660246]{coreide270.bpl} GalBrow.TGalleryBrowseDlg.SetupTitleBar (Line 372, "GalBrow.pas" + 22) + $2
[21135583]{designide270.bpl} DlgForm.TDialogForm.Create (Line 36, "DlgForm.pas" + 7) + $A
[2065FD16]{coreide270.bpl} GalBrow.BrowseNewDialog (Line 269, "GalBrow.pas" + 5) + $3
[2065FCC2]{coreide270.bpl} GalBrow.BrowseNewDialog (Line 256, "GalBrow.pas" + 0) + $6
[206662BC]{coreide270.bpl} Gallery.FileNewDialog (Line 809, "Gallery.pas" + 0) + $0
[004AC787]{bds.exe     } AppMain.TAppBuilder.FileNew (Line 2914, "AppMain.pas" + 1) + $2
[5018043F]{rtl270.bpl  } System.Classes.TBasicAction.Execute (Line 17485, "System.Classes.pas" + 3) + $7
[50CDEF6E]{vcl270.bpl  } Vcl.ActnList.TCustomAction.Execute (Line 284, "Vcl.ActnList.pas" + 19) + $2D
[50180293]{rtl270.bpl  } System.Classes.TBasicActionLink.Execute (Line 17396, "System.Classes.pas" + 2) + $7
[50CF7300]{vcl270.bpl  } Vcl.Controls.TControl.Click (Line 7593, "Vcl.Controls.pas" + 6) + $B
[50D79490]{vcl270.bpl  } Vcl.ComCtrls.TToolButton.Notification (Line 21934, "Vcl.ComCtrls.pas" + 7) + $4
[50CF77CB]{vcl270.bpl  } Vcl.Controls.TControl.WMLButtonUp (Line 7734, "Vcl.Controls.pas" + 6) + $43
[50CF6DBE]{vcl270.bpl  } Vcl.Controls.TControl.WndProc (Line 7478, "Vcl.Controls.pas" + 89) + $E
[50CF69F8]{vcl270.bpl  } Vcl.Controls.TControl.Perform (Line 7258, "Vcl.Controls.pas" + 10) + $0
[50CFB31E]{vcl270.bpl  } Vcl.Controls.GetControlAtPos (Line 10143, "Vcl.Controls.pas" + 4) + $6D
[50CFB3E6]{vcl270.bpl  } Vcl.Controls.TWinControl.ControlAtPos (Line 10166, "Vcl.Controls.pas" + 13) + $6
[50CF69F8]{vcl270.bpl  } Vcl.Controls.TControl.Perform (Line 7258, "Vcl.Controls.pas" + 10) + $0
[50CFB4B4]{vcl270.bpl  } Vcl.Controls.TWinControl.IsControlMouseMsg (Line 10190, "Vcl.Controls.pas" + 15) + $21
[50CFBB03]{vcl270.bpl  } Vcl.Controls.TWinControl.WndProc (Line 10367, "Vcl.Controls.pas" + 112) + $7
[50D7B91D]{vcl270.bpl  } Vcl.ComCtrls.TToolBar.UpdateButtonStates (Line 23280, "Vcl.ComCtrls.pas" + 1) + $1
[50D7E4B0]{vcl270.bpl  } Vcl.ComCtrls.TToolBar.FindButtonFromAccel (Line 24906, "Vcl.ComCtrls.pas" + 2) + $1
[50CFB228]{vcl270.bpl  } Vcl.Controls.TWinControl.MainWndProc (Line 10119, "Vcl.Controls.pas" + 2) + $C
[50181184]{rtl270.bpl  } System.Classes.StdWndProc (Line 17989, "System.Classes.pas" + 8) + $0
[5005FD46]{rtl270.bpl  } System.@IsClass (Line 18181, "System.pas" + 1) + $8
[50E55E23]{vcl270.bpl  } Vcl.Forms.TCustomForm.UpdateWindowState (Line 7791, "Vcl.Forms.pas" + 0) + $3
[50E5A7CF]{vcl270.bpl  } Vcl.Forms.TApplication.HookMainWindow (Line 11052, "Vcl.Forms.pas" + 10) + $7
[50E5A812]{vcl270.bpl  } Vcl.Forms.TApplication.UnhookMainWindow (Line 11082, "Vcl.Forms.pas" + 6) + $8
[50E5AB45]{vcl270.bpl  } Vcl.Forms.IsClass (Line 11196, "Vcl.Forms.pas" + 2) + $1B
[0051E104]{bds.exe     } bds.bds (Line 222, "" + 13) + $2