Invalid access to memory - Vcl::Graphics::TCanvas::SetHandle

Started happening after last night. Occurs after the connection/login phase of any server connection.

WinSCP 5.7.6

Error message:
Invalid access to memory.

Stack trace:
(001BF7A1) Vcl::Graphics::TCanvas::SetHandle
(0008A52F) ntdll.dll
(00077DAA) ntdll.dll.KiUserExceptionDispatcher
(00006657) TCustomScpExplorerForm::UpdateTransferList

(001BF7A1) Vcl::Graphics::TCanvas::SetHandle
(007E46BA) C4799_3
(007E6722) ____ExceptionHandler
(007E369C) __ExceptionHandler
(0008A52F) ntdll.dll
(00077DAA) ntdll.dll.KiUserExceptionDispatcher
(00006657) TCustomScpExplorerForm::UpdateTransferList

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.

Seems to have resolved itself for now. Odd.

Let us know if the problem repeats.

<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 5.21.7

Error message:
无效的内存访问。

Stack trace:
(00225085) Vcl::Graphics::TCanvas::SetHandle
(0009783F) ntdll.dll
(000777B1) ntdll.dll.KiUserExceptionDispatcher
(002824BD) Vcl::Controls::TWinControl::WndProc
(00281B04) Vcl::Controls::TWinControl::MainWndProc
(003C9C40) System::Classes::_18201
(00031211) USER32.dll
(00022021) USER32.dll
(00021AA5) USER32.dll
(0002B98D) USER32.dll
(0007776B) ntdll.dll.KiUserCallbackDispatcher
(00037923) USER32.dll
(00020B01) USER32.dll.SendMessageW
(004A94DA) Tb2common::HandleWMPrint
(004DD027) Tbx::TTBXPopupWindow::WMPrint
(002824BD) Vcl::Controls::TWinControl::WndProc
(00281B04) Vcl::Controls::TWinControl::MainWndProc
(003C9C40) System::Classes::_18201
(00031211) USER32.dll
(00022021) USER32.dll
(00021AA5) USER32.dll
(0002B98D) USER32.dll
(0007776B) ntdll.dll.KiUserCallbackDispatcher
(00037923) USER32.dll
(00020B01) USER32.dll.SendMessageW

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.

@leixin: 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.