Unzulässiger Zugriff auf einen Speicherbereich - _OPENSSL_sk_set

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
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WinSCP 5.17.9

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(006C594A) _OPENSSL_sk_set
(000861AF) ntdll.dll
(00072B31) ntdll.dll.KiUserExceptionDispatcher
(00AFA63F) C2435_0
(0003299E) USER32.dll.SendMessageW
(0002FCB6) USER32.dll.EnumThreadWindows
(00231A31) Vcl::Forms::DisableTaskWindows
(00239BCB) Vcl::Forms::TCustomForm::ShowModal

(00090280)WinSCP.exe
(000861AF) ntdll.dll

(00090280)WinSCP.exe
(00F89F32) C5296_0
(00F8BF9A) ____ExceptionHandler
(00F88D54) __ExceptionHandler
(000861AF) ntdll.dll

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.