<All I did was try to change directories on the remote server tree>

WinSCP 5.9.4

Error message:
Invalid access to memory.

Stack trace:
(007CEE69) TLocationProfilesDialog::ProfilesViewEndDrag
(0008137F) ntdll.dll
(0006EF1A) ntdll.dll.KiUserExceptionDispatcher
(002497E7) Vcl::Controls::TControl::DoEndDrag
(002862C0) Vcl::Comctrls::TCustomTreeView::DoEndDrag
(00245D83) Vcl::Controls::TBaseDragControlObject::EndDrag
(00245DB8) Vcl::Controls::TBaseDragControlObject::Finished
(00246F6D) Vcl::Controls::DragDone
(00245BBA) Vcl::Controls::TDragObject::WndProc
(00245CA1) Vcl::Controls::TDragObject::MainWndProc
(0037322C) System::Classes::_18201
(0002C271) USER32.dll
(0000D845) USER32.dll
(0000D19F) USER32.dll
(0000CF5B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.