Invalid access to memory - TCustomScpExplorerForm::UserActionTimer

Plase see the attachment


WinSCP 5.13.4

Error message:
Invalid access to memory.

Stack trace:
(FFFFF400)WinSCP.exe
(00083FFF) ntdll.dll
(00071931) ntdll.dll.KiUserExceptionDispatcher
(FFFFFFFF) TCustomScpExplorerForm::UserActionTimer
(0003EDF7) TNonVisualDataModule::GetSessionFolderRoot
(0003EDB4) TNonVisualDataModule::GetSessionFolderRoot
(00380D20) System::Generics::Collections::TThreadList__1<System::DelphiInterface<System::IInterface> >::RemoveItem
(00045359) USER32.dll
(00036297) USER32.dll
(000353D6) USER32.dll
(000351AB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.