<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:
Error getting name of current remote directory.

Invalid access to memory.

Stack trace:
(0038F068) System::Generics::Collections::TList__1<System::DelphiInterface<System::Classes::IInterfaceList> >::TrimExcess
(008BA3F6) C5101_0
(008BC45E) ____ExceptionHandler
(008B9218) __ExceptionHandler
(0007CD1F) ntdll.dll
(0006A9B1) ntdll.dll.KiUserExceptionDispatcher
(007BB2DA) TTerminal::ReadCurrentDirectory
(007B6A63) TTerminal::ReactOnCommand
(006784E7) TUnixDirView::ChangeDirectory
(00676A22) TUnixDirView::ExecuteParentDirectory
(0041DE04) Customdirview::TCustomDirView::Execute
(0041B7EA) Customdirview::TCustomDirView::DoExecute
(0041C3BB) Customdirview::TCustomDirView::WMLButtonDblClk
(00259A15) Vcl::Controls::TWinControl::WndProc
(0029D943) Vcl::Comctrls::TCustomListView::WndProc
(0037ED60) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00016AF8) USER32.dll.CallWindowProcW
(00049AD7) COMCTL32.DLL
(00049B76) COMCTL32.DLL
(00049930) COMCTL32.DLL
(0003AE69) USER32.dll
(00037335) USER32.dll
(00016AF8) USER32.dll.CallWindowProcW
(0044115F) Dragdrop::TDragDrop::WndMethod
(0037ED60) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036BE9) USER32.dll
(000369CB) USER32.dll.DispatchMessageW

(008BAA61) C5101_0
(008BC03B) _ReThrowException
(007B84AA) TTerminal::DoChangeDirectory
(007BB2DA) TTerminal::ReadCurrentDirectory
(007B6A63) TTerminal::ReactOnCommand
(006784E7) TUnixDirView::ChangeDirectory
(00676A22) TUnixDirView::ExecuteParentDirectory
(0041DE04) Customdirview::TCustomDirView::Execute
(0041B7EA) Customdirview::TCustomDirView::DoExecute
(0041C3BB) Customdirview::TCustomDirView::WMLButtonDblClk
(00259A15) Vcl::Controls::TWinControl::WndProc
(0029D943) Vcl::Comctrls::TCustomListView::WndProc
(0037ED60) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00016AF8) USER32.dll.CallWindowProcW
(00049AD7) COMCTL32.DLL
(00049B76) COMCTL32.DLL
(00049930) COMCTL32.DLL
(0003AE69) USER32.dll
(00037335) USER32.dll
(00016AF8) USER32.dll.CallWindowProcW
(0044115F) Dragdrop::TDragDrop::WndMethod
(0037ED60) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036BE9) USER32.dll
(000369CB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.