Invalid access to memory - TNonVisualDataModule::ExplorerActionsUpdate

<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 5.8.2

Error message:
Invalid access to memory.

Stack trace:
(0002F728) TNonVisualDataModule::ExplorerActionsUpdate
(0003EE3E) ntdll.dll.ZwWow64CallFunction64
(0003F5BA) ntdll.dll.KiUserExceptionDispatcher
(0039CB30) System::Actions::TContainedActionList::UpdateAction
(00183CFE) Vcl::Actnlist::TCustomAction::Update
(001F5B66) Vcl::Forms::_16777
(001F5B66) Vcl::Forms::_16777
(001F5BE4) Vcl::Forms::TCustomForm::UpdateActions
(0000663D) TCustomScpExplorerForm::UpdateActions
(00021A88) TCustomScpExplorerForm::Dispatch
(00236A39) Vcl::Controls::TWinControl::WndProc
(001F0EE8) Vcl::Forms::TCustomForm::WndProc
(007E6C31) Vclcommon::C2754_0
(00231B30) Vcl::Controls::TControl::Perform
(00235E29) Vcl::Controls::TWinControl::UpdateShowing
(00235F38) Vcl::Controls::TWinControl::UpdateControlState
(00238ADE) Vcl::Controls::TWinControl::CMVisibleChanged
(00236A39) Vcl::Controls::TWinControl::WndProc
(001F0EE8) Vcl::Forms::TCustomForm::WndProc
(007E6D58) Vclcommon::C2754_0
(00231B30) Vcl::Controls::TControl::Perform
(002304BE) Vcl::Controls::TControl::SetVisible
(000C1C6C) Execute
(000024A8) wWinMain
(0083EB55) C4941_0
(00059B8D) ntdll.dll
(00059B55) ntdll.dll

(0002F728) TNonVisualDataModule::ExplorerActionsUpdate
(0084095E) C5073_3
(008429C6) ____ExceptionHandler
(0083F940) __ExceptionHandler
(0003EE3E) ntdll.dll.ZwWow64CallFunction64
(0003F5BA) ntdll.dll.KiUserExceptionDispatcher
(0039CB30) System::Actions::TCon

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 5.13.2

Error message:
Invalid access to memory.

Stack trace:
(0003504C) TNonVisualDataModule::ExplorerActionsUpdate
(00045A86) ntdll.dll
(0000F13E) ntdll.dll.KiUserExceptionDispatcher
(003C2428) System::Actions::TContainedActionList::UpdateAction
(001A81BE) Vcl::Actnlist::TCustomAction::Update
(0021A026) Vcl::Forms::_16777
(0021A026) Vcl::Forms::_16777
(0021A0A4) Vcl::Forms::TCustomForm::UpdateActions

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 5.13.6

Error message:
无效的内存访问。

Stack trace:
(00035198) TNonVisualDataModule::ExplorerActionsUpdate
(0007E16F) ntdll.dll
(0006BD81) ntdll.dll.KiUserExceptionDispatcher
(003C3314) System::Actions::TContainedActionList::UpdateAction
(001A90AA) Vcl::Actnlist::TCustomAction::Update
(0021AF12) Vcl::Forms::_16777
(0021AF12) Vcl::Forms::_16777
(0021AF90) Vcl::Forms::TCustomForm::UpdateActions

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 5.21.8

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(00046794) TNonVisualDataModule::ExplorerActionsUpdate
(00087ACF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(0040D6F8) System::Actions::TContainedActionList::UpdateAction
(001CF79A) Vcl::Actnlist::TCustomAction::Update
(00241602) Vcl::Forms::_16777
(00241680) Vcl::Forms::TCustomForm::UpdateActions

The problem happens rarely. I cannot reproduce it.