<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 5.7.6

Error message:
Error getting name of current remote directory.

Invalid access to memory.

Stack trace:
(0034F076) System::Generics::Collections::TList__1<System::Generics::Collections::TPair__2<int, System::DelphiInterface<System::Classes::IInterfaceList> > >::Move
(007E46BA) C4799_3
(007E6722) ____ExceptionHandler
(007E369C) __ExceptionHandler
(0007C61F) ntdll.dll
(00069E6A) ntdll.dll.KiUserExceptionDispatcher
(00713702) TTerminal::ReadCurrentDirectory
(0070F6B6) TTerminal::ReactOnCommand
(006154B7) TUnixDirView::ChangeDirectory
(00613902) TUnixDirView::ExecuteFile
(0021C315) Vcl::Controls::TWinControl::WndProc
(00260243) Vcl::Comctrls::TCustomListView::WndProc
(003402A8) System::Classes::_18201
(00033921) USER32.dll
(0001378B) USER32.dll
(00013522) USER32.dll.CallWindowProcW
(00076D3A) COMCTL32.DLL
(00076D21) COMCTL32.DLL
(00076B5C) COMCTL32.DLL
(00033921) USER32.dll
(0001378B) USER32.dll
(00013522) USER32.dll.CallWindowProcW
(003FEE7F) Dragdrop::TDragDrop::WndMethod
(003402A8) System::Classes::_18201
(00033921) USER32.dll
(0001378B) USER32.dll
(0001308C) USER32.dll
(00012E4B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.