Unzulässiger Zugriff auf einen Speicherbereich - Driveview::TDriveView::GetDriveToNode

<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 5.21.6

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(00FDF74E) C5412_0
(00FE17B6) ____ExceptionHandler
(00FDE570) __ExceptionHandler
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(00484AEF) Driveview::TDriveView::GetDriveToNode
(00483D9C) Driveview::TDriveView::GetDriveTypetoNode
(00482D21) Driveview::_16497
(00482F22) Driveview::TDriveView::DoFindNodeToPath
(00482FA3) Driveview::TDriveView::FindNodeToPath
(00484921) Driveview::TDriveView::FindPathNode
(00471452) Customdriveview::TCustomDriveView::SetDirectory
(004849CE) Driveview::TDriveView::SetDirectory
(00474B0E) Dirview::TDirView::SetPath
(00479503) Dirview::TDirView::ExecuteDrive
(0005836C) TScpCommanderForm::LocalPathComboBoxItemClick
(004E2B19) Tbxextitems::TTBXComboBoxItem::DoListClick
(003C9C14) System::Classes::_18201
(00031331) USER32.dll
(000220E1) USER32.dll
(000209A0) USER32.dll
(000204EB) USER32.dll.DispatchMessageW

(00439C49) System::SysFreeMem
(00FDF74E) C5412_0
(00FE17B6) ____ExceptionHandler
(00FDE570) __ExceptionHandler
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(00483D9C) Driveview::TDriveView::GetDriveTypetoNode
(00482D21) Driveview::_16497
(00482F22) Driveview::TDriveView::DoFindNodeToPath
(00482FA3) Driveview::TDriveView::FindNodeToPath
(00484921) Driveview::TDriveView::FindPathNode
(00471452) Customdriveview::TCustomDriveView::SetDirectory
(004849CE) Driveview::TDriveView::SetDirectory
(00474B0E) Dirview::TDirView::SetPath
(00479503) Dirview::TDirView::ExecuteDrive
(0005836C) TScpCommanderForm::LocalPathComboBoxItemClick
(004E2B19) Tbxextitems::TTBXComboBoxItem::DoListClick
(003C9C14) System::Classes::_18201
(00031331) USER32.dll
(000220E1) USER32.dll
(000209A0) USER32.dll
(000204EB) USER32.dll.DispatchMessageW

(00FDFDB9) C5412_0
(00FE1393) _ReThrowException
(000583AC) TScpCommanderForm::LocalPathComboBoxItemClick
(004E2B19) Tbxextitems::TTBXComboBoxItem::DoListClick
(003C9C14) System::Classes::_18201
(00031331) USER32.dll
(000220E1) USER32.dll
(000209A0) USER32.dll
(000204EB) USER32.dll.DispatchMessageW

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.

@joerg.sitek: 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.