Invalid access to memory - _ssl3_send_certificate_request

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WinSCP 5.9.5

Error message:
Invalid access to memory.

Stack trace:
(00866A8A) _ssl3_send_certificate_request
(0003EF0E) ntdll.dll.ZwWow64CallFunction64
(0003F68A) ntdll.dll.KiUserExceptionDispatcher
(00061F4A) __tpdsc__ THistoryStrings *
(00010FDF) TCustomScpExplorerForm::CustomExecuteFile
(003B5440) System::Dateutils::_16967
(0019C56E) System::Generics::Collections::TList__1<int>::Reverse
(0020E3D6) Vcl::Forms::TApplication::
(0020E454) Vcl::Forms::TApplication::

The problem happens rarely. I cannot reproduce it.