Invalid access to memory - System::Classes::TReader::ReadComponent

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.1

Error message:
Invalid access to memory.

Stack trace:
(00FBADCE) C5246_0
(00088F9F) ntdll.dll
(000741F1) ntdll.dll.KiUserExceptionDispatcher
(003B7D15) System::Classes::_17670
(003B7F40) System::Classes::TReader::ReadComponent
(003B81F1) System::Classes::TReader::ReadDataInner
(003B815F) System::Classes::TReader::ReadData
(003C5DD9) System::Classes::TComponent::ReadState
(003B7FD7) System::Classes::TReader::ReadComponent
(003B81F1) System::Classes::TReader::ReadDataInner
(003B815F) System::Classes::TReader::ReadData
(003C5DD9) System::Classes::TComponent::ReadState
(003B7FD7) System::Classes::TReader::ReadComponent
(003B81F1) System::Classes::TReader::ReadDataInner
(003B8130) System::Classes::TReader::ReadData
(003C5DD9) System::Classes::TComponent::ReadState
(002396ED) Vcl::Forms::TCustomForm::ReadState
(003B910B) System::Classes::TReader::ReadRootComponent
(003B2FD6) System::Classes::TStream::ReadComponent
(003A8A1B) System::Classes::_17089
(003AA36F) System::Classes::_17116
(003AA344) System::Classes::_17116
(003AA3FD) System::Classes::InitInheritedComponent
(00238EE6) Vcl::Forms::TCustomForm::TCustomForm
(000045BA) Vcl::Forms::TForm::TForm
(00003B0D) TCustomScpExplorerForm::TCustomScpExplorerForm
(0004FB16) TScpCommanderForm::TScpCommanderForm
(00243E96) Vcl::Forms::TApplication::CreateForm
(00E79F87) _SafeFormCreate
(00002658) wWinMain
(00FBA019) C5162_0
(000677A2) ntdll.dll.RtlGetAppContainerNamedObjectPath
(0006776F) ntdll.dll.RtlGetAppContainerNamedObjectPath

(00FBADCE) C5246_0
(00088F9F) ntdll.dll
(000741F1) ntdll.dll.KiUserExceptionDispatcher
(003B7D15) System::Classes::_17670
(003B7F40) System::Classes::TReader::ReadComponent
(003B81F1) System::Classes::TReader::ReadDataInner
(003B815F) System::Classes::TReader::ReadData
(003C5DD9) System::Classes::TComponent::ReadState
(003B7FD7) System::Classes::TReader::ReadComponent
(003B81F1) System::Classes::TReader::ReadDataInner
(003B815F) System::Classes::TReader::ReadData
(003C5DD9) System::Classes::TComponent::ReadState
(003B7FD7) System::Classes::TReader::ReadComponent
(003B81F1) System::Classes::TReader::ReadDataInner
(003B8130) System::Classes::TReader::ReadData
(003C5DD9) System::Classes::TComponent::ReadState
(002396ED) Vcl::Forms::TCustomForm::ReadState
(003B910B) System::Classes::TReader::ReadRootComponent
(003B2FD6) System::Classes::TStream::ReadComponent
(003A8A1B) System::Classes::_17089
(003AA36F) System::Classes::_17116
(003AA344) System::Classes::_17116
(003AA3FD) System::Classes::InitInheritedComponent
(00238EE6) Vcl::Forms::TCustomForm::TCustomForm
(000045BA) Vcl::Forms::TForm::TForm
(00003B0D) TCustomScpExplorerForm::TCustomScpExplorerForm
(0004FB16) TScpCommanderForm::TScpCommanderForm
(00243E96) Vcl::Forms::TApplication::CreateForm
(00E79F87) _SafeFormCreate
(000026

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Invalid access to memory.

Stack trace:
(6E5BBC3F)WinSCP.exe
(00087AEF) ntdll.dll
(00073FB1) ntdll.dll.KiUserExceptionDispatcher
(003BA188) System::Classes::TReader::ReadComponent
(003BA439) System::Classes::TReader::ReadDataInner
(003BA3A7) System::Classes::TReader::ReadData
(003C8021) System::Classes::TComponent::ReadState
(003BA21F) System::Classes::TReader::ReadComponent
(003BA439) System::Classes::TReader::ReadDataInner
(003BA3A7) System::Classes::TReader::ReadData
(003C8021) System::Classes::TComponent::ReadState
(003BA21F) System::Classes::TReader::ReadComponent
(003BA439) System::Classes::TReader::ReadDataInner
(003BA378) System::Classes::TReader::ReadData
(003C8021) System::Classes::TComponent::ReadState
(0023B935) Vcl::Forms::TCustomForm::ReadState
(003BB353) System::Classes::TReader::ReadRootComponent
(003B521E) System::Classes::TStream::ReadComponent
(003AAC63) System::Classes::_17089
(003AC5B7) System::Classes::_17116
(003AC645) System::Classes::InitInheritedComponent
(0023B12E) Vcl::Forms::TCustomForm::TCustomForm
(00004D22) Vcl::Forms::TForm::TForm
(000041F8) TCustomScpExplorerForm::TCustomScpExplorerForm
(00050EBE) TScpCommanderForm::TScpCommanderForm
(002460DE) Vcl::Forms::TApplication::CreateForm
(00E9A927) _SafeFormCreate
(000027FA) wWinMain
(00FDD761) __wstartup
(00066B4C) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00066B19) ntdll.dll.RtlGetAppContainerNamedObjectPath

(6E5BBC3F)WinSCP.exe
(00087AEF) ntdll.dll
(00073FB1) ntdll.dll.KiUserExceptionDispatcher
(003BA188) System::Classes::TReader::ReadComponent
(003BA439) System::Classes::TReader::ReadDataInner
(003BA3A7) System::Classes::TReader::ReadData
(003C8021) System::Classes::TComponent::ReadState
(003BA21F) System::Classes::TReader::ReadComponent
(003BA439) System::Classes::TReader::ReadDataInner
(003BA3A7) System::Classes::TReader::ReadData
(003C8021) System::Classes::TComponent::ReadState
(003BA21F) System::Classes::TReader::ReadComponent
(003BA439) System::Classes::TReader::ReadDataInner
(003BA378) System::Classes::TReader::ReadData
(003C8021) System::Classes::TComponent::ReadState
(0023B935) Vcl::Forms::TCustomForm::ReadState
(003BB353) System::Classes::TReader::ReadRootComponent
(003B521E) System::Classes::TStream::ReadComponent
(003AAC63) System::Classes::_17089
(003AC5B7) System::Classes::_17116
(003AC645) System::Classes::InitInheritedComponent
(0023B12E) Vcl::Forms::TCustomForm::TCustomForm
(00004D22) Vcl::Forms::TForm::TForm
(000041F8) TCustomScpExplorerForm::TCustomScpExplorerForm
(00050EBE) TScpCommanderForm::TScpCommanderForm
(002460DE) Vcl::Forms::TApplication::CreateForm
(00E9A927) _SafeFormCreate
(000027FA) wWinMain
(00FDD761) __wstartup
(00066B4C) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00066B19) ntdll.dll.RtlGetAppContainerNamedObjectPath

(6E5BBC3F)WinSCP

The problem happens rarely. I cannot reproduce it.