<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 5.19.2

Error message:
Accès mémoire invalide.

Trace de la pile :
(0005E563) ntdll.dll
(00FBC612) C5294_3
(00FBE67A) ____ExceptionHandler
(00FBB434) __ExceptionHandler
(0008788F) ntdll.dll
(00073EC1) ntdll.dll.KiUserExceptionDispatcher
(0003F0C5) ntdll.dll
(0003EF14) ntdll.dll.RtlEnterCriticalSection
(00407C6F) System::Syncobjs::TCriticalSection::Acquire
(00CEBE97) TTerminalQueue::GetIsEmpty
(00008EC7) TCustomScpExplorerForm::AddQueueItem
(0001581E) TCustomScpExplorerForm::ExecutedFileChanged
(0007606E) TEditorManager::CheckFileChange
(00073E2D) TEditorManager::Check
(000190D0) TCustomScpExplorerForm::Idle
(0004CA7F) TNonVisualDataModule::DoIdle
(0004CA3C) TNonVisualDataModule::SessionIdleTimerTimer
(003C79D8) System::Classes::_18201
(0003DDE9) USER32.dll
(00034DA5) USER32.dll
(00032B15) USER32.dll
(000328DB) USER32.dll.DispatchMessageW

(00FBCC7D) C5294_3
(00FBE257) _ReThrowException
(00076090) TEditorManager::CheckFileChange
(00073E2D) TEditorManager::Check
(000190D0) TCustomScpExplorerForm::Idle
(0004CA7F) TNonVisualDataModule::DoIdle
(0004CA3C) TNonVisualDataModule::SessionIdleTimerTimer
(003C79D8) System::Classes::_18201
(0003DDE9) USER32.dll
(00034DA5) USER32.dll
(00032B15) USER32.dll
(000328DB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.