<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 5.7.7

Error message:
Error getting name of current remote directory.

Invalid access to memory.

Stack trace:
(614C360D)WinSCP.exe
(007E08AA) C4799_0
(007E2912) ____ExceptionHandler
(007DF88C) __ExceptionHandler
(0008A61F) ntdll.dll
(00077E7A) ntdll.dll.KiUserExceptionDispatcher
(0073CEB9) TConsoleDialog::UpdateControls
(0073CE6F) TConsoleDialog::DoChangeDirectory
(00714252) TTerminal::ReadCurrentDirectory
(00710206) TTerminal::ReactOnCommand
(00616007) TUnixDirView::ChangeDirectory
(00614452) TUnixDirView::ExecuteFile
(0021C609) Vcl::Controls::TWinControl::WndProc
(00260537) Vcl::Comctrls::TCustomListView::WndProc
(0034059C) System::Classes::_18201
(000374F1) USER32.dll
(00015C3B) USER32.dll
(000159D2) USER32.dll.CallWindowProcW
(00098CBA) COMCTL32.DLL
(00098CA1) COMCTL32.DLL
(00098ADC) COMCTL32.DLL
(000374F1) USER32.dll
(00015C3B) USER32.dll
(000159D2) USER32.dll.CallWindowProcW
(003FF173) Dragdrop::TDragDrop::WndMethod
(0034059C) System::Classes::_18201
(000374F1) USER32.dll
(00015C3B) USER32.dll
(0001553C) USER32.dll
(000152FB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.