Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

<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 5.13.2

Error message:
メモリのアクセス違反

スタック トレース:
(00331108) System::Internal::Strhlpr::UnicodeAssign
(008BC642) C5104_0
(008BE6AA) ____ExceptionHandler
(008BB464) __ExceptionHandler
(00088DEF) ntdll.dll
(0006FCE1) ntdll.dll.KiUserExceptionDispatcher
(0076229C) TSessionData::GetNameWithoutHiddenPrefix
(007623AE) TSessionData::HasSessionName
(00762472) TSessionData::GetSessionName
(000989C2) TTerminalManager::TerminalTitle
(00098A77) TTerminalManager::GetActiveTerminalTitle
(00096154) TTerminalManager::UpdateAppTitle
(00095E6C) TTerminalManager::DoSetActiveTerminal
(00095E32) TTerminalManager::SetActiveTerminalWithAutoReconnect
(00066F1D) TEditorManager::CheckFileChange
(00064FAA) TEditorManager::Check
(000175AD) TCustomScpExplorerForm::Idle
(0003EDA3) TNonVisualDataModule::DoIdle
(0003ED60) TNonVisualDataModule::SessionIdleTimerTimer
(0038022C) System::Classes::_18201
(0001D0B9) USER32.dll
(00027844) USER32.dll
(0002A140) USER32.dll
(000180D7) USER32.dll
(00017C1B) USER32.dll.DispatchMessageW

(008BCCAD) C5104_0
(008BE287) _ReThrowException
(00066F3F) TEditorManager::CheckFileChange
(00064FAA) TEditorManager::Check
(000175AD) TCustomScpExplorerForm::Idle
(0003EDA3) TNonVisualDataModule::DoIdle
(0003ED60) TNonVisualDataModule::SessionIdleTimerTimer
(0038022C) System::Classes::_18201
(0001D0B9) USER32.dll
(00027844) USER32.dll
(0002A140) USER32.dll
(000180D7) USER32.dll
(00017C1B) USER32.dll.DispatchMessageW

(00770995) TSessionLog::Add
(00088DEF) ntdll.dll
(0006FCE1) ntdll.dll.KiUserExceptionDispatcher
(00770B7D) TSessionLog::AddException
(007B8158) TTerminal::ShowExtendedException
(0021EE2A) Vcl::Forms::TApplication::HandleException
(0038022C) System::Classes::_18201
(0001D0B9) USER32.dll
(00027844) USER32.dll
(0002A140) USER32.dll
(000180D7) USER32.dll
(00017C1B) USER32.dll.DispatchMessageW

(00770995) TSessionLog::Add
(008BC642) C5104_0
(008BE6AA) ____ExceptionHandler
(008BB464) __ExceptionHandler
(00088DEF) ntdll.dll
(0006FCE1) ntdll.dll.KiUserExceptionDispatcher
(00770B7D) TSessionLog::AddException
(007B8158) TTerminal::ShowExtendedException
(0021EE2A) Vcl::Forms::TApplication::HandleException
(000E391A) Execute
(000024B4) wWinMain
(008BA679) C4972_0
(00063B45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063B12) ntdll.dll.RtlGetAppContainerNamedObjectPath

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.