Invalid access to memory

<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 5.13.1

Error message:
Invalid access to memory.

Stack trace:
(007CB698)
(00081D0F) ntdll.dll
(0006F88A) ntdll.dll.KiUserExceptionDispatcher
(006B6B24)
(0000D766)
(0000F28B)
(0000F4B4)
(0000F53B)
(0003ECE8)
(0037ED60)
(0002C2B1) USER32.dll
(0000D895) USER32.dll
(0000D1EF) USER32.dll
(0000CFAB) USER32.dll.DispatchMessageW

Status: unknown_rel_addr

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.
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Error message:
Invalid pointer operation

Stack trace:
[0158D699] System::Sysutils::StrDispose
[0158D699] System::Sysutils::StrDispose
[0141C755] Vcl::Controls::TWinControl::WndProc
[013851C0] Vcl::Stdctrls::TButtonControl::WndProc
[01417864] Vcl::Controls::TControl::Perform
[0141567D] Vcl::Controls::TControl::SetTextBuf
[0129FEB9] TMessageTimeout::UpdateButton
[0129FF29] TMessageTimeout::DoTimer
[01540678] System::Classes::_18201
[76F5FA81] USER32.dll