<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 6.5.1

Error message:
Error listing directory '/on/demandware.servlet/webdav/Sites/Catalogs/LSS_eCommerce_Master/default/images'.

Out of memory

Stack trace:
(0013A6E4) System::UStrSetLength
(0013A6E4) System::UStrSetLength
(00D63B93) TWebDAVFileSystem::NeonBodyReader
(00B27A54) _ne_read_response_block
(00B289E1) _ne_discard_response
(00B28A1D) _ne_request_dispatch
(00B30873) _ne_propfind_get_request
(00B30957) _ne_propfind_allprop
(00D5F456) TWebDAVFileSystem::ReadDirectoryInternal
(00D5F65E) TWebDAVFileSystem::ReadDirectory
(00D3A23E) TTerminal::CustomReadDirectory
(00D39521) TTerminal::ReadDirectory
(00D3480B) TTerminal::ReactOnCommand
(00BB3215) TUnixDirView::ChangeDirectory
(00BB1345) TUnixDirView::ExecuteFile
(005074D2) Customdirview::TCustomDirView::DoExecute
(00508105) Customdirview::TCustomDirView::WMLButtonDblClk
(003A3431) Vcl::Controls::TWinControl::WndProc
(0041AF43) Vcl::Comctrls::TCustomListView::WndProc
(00204B54) System::Classes::_18364
(00040459) USER32.dll
(00036B45) USER32.dll
(00036271) USER32.dll.GetSystemMetricsForDpi
(00034AA6) USER32.dll.CallWindowProcW
(0007A1F7) COMCTL32.DLL
(0007A296) COMCTL32.DLL
(0007A04C) COMCTL32.DLL
(00040459) USER32.dll
(00036B45) USER32.dll
(00036271) USER32.dll.GetSystemMetricsForDpi
(00034AA6) USER32.dll.CallWindowProcW
(005393AB) Dragdrop::TDragDrop::WndMethod
(00204B54) System::Classes::_18364
(00040459) USER32.dll
(00036B45) USER32.dll
(000353EB) USER32.dll
(00034F1B) USER32.dll.DispatchMessageW

(00EF5435)
(00EF6A0F)
(00D3A26D) TTerminal::CustomReadDirectory
(00D39521) TTerminal::ReadDirectory
(00D3480B) TTerminal::ReactOnCommand
(00BB3215) TUnixDirView::ChangeDirectory
(00BB1345) TUnixDirView::ExecuteFile
(005074D2) Customdirview::TCustomDirView::DoExecute
(00508105) Customdirview::TCustomDirView::WMLButtonDblClk
(003A3431) Vcl::Controls::TWinControl::WndProc
(0041AF43) Vcl::Comctrls::TCustomListView::WndProc
(00204B54) System::Classes::_18364
(00040459) USER32.dll
(00036B45) USER32.dll
(00036271) USER32.dll.GetSystemMetricsForDpi
(00034AA6) USER32.dll.CallWindowProcW
(0007A1F7) COMCTL32.DLL
(0007A296) COMCTL32.DLL
(0007A04C) COMCTL32.DLL
(00040459) USER32.dll
(00036B45) USER32.dll
(00036271) USER32.dll.GetSystemMetricsForDpi
(00034AA6) USER32.dll.CallWindowProcW
(005393AB) Dragdrop::TDragDrop::WndMethod
(00204B54) System::Classes::_18364
(00040459) USER32.dll
(00036B45) USER32.dll
(000353EB) USER32.dll
(00034F1B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

I had multiple tabs open, each connected to an SSH session on other machines / VMs. I clicked on a tab, refreshed my local directory, click-and-dragged a file from local-to-remote to transfer it, then clicked off the window. I did not see the precise moment the error occurred.

WinSCP 6.3.3

Error message:
Out of memory

Stack trace:
(002A8EF0) System::UStrSetLength
(002A8EF0) System::UStrSetLength
(00B346D5) TCustomCommand::Complete
(0000C7B0) TCustomScpExplorerForm::CustomCommandState
(00055CFB) TNonVisualDataModule::UpdateCustomCommandsToolbarList
(00055F1A) TNonVisualDataModule::UpdateCustomCommandsToolbar

The problem happens rarely. I cannot reproduce it.

<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 5.13.7

Error message:
Out of memory

Stack trace:
(003F43B4) System::UStrSetLength
(003F43B4) System::UStrSetLength
(0073893B) TSecureShell::AddStdError
(00736FE1) TSecureShell::FromBackend
(006ECA34) _from_backend
(00648709) _ssh_sharing_queue_global_request
(0064C560) _ssh_agent_forwarding_permitted
(00651487) _sshfwd_x11_is_local
(006446A2) C2486_0
(00644855) C2486_0
(00644B70) _ssh_connshare_log
(00673CDD) _select_result
(0073A446) TSecureShell::HandleNetworkEvents
(0073A70A) TSecureShell::ProcessNetworkEvents
(0073B009) TSecureShell::Idle
(007B6283) TTerminal::Idle
(007B62A1) TTerminal::Idle
(00099AB0) TTerminalManager::Idle
(00017687) TCustomScpExplorerForm::Idle
(0003EF0B) TNonVisualDataModule::DoIdle
(0003EEC8) TNonVisualDataModule::SessionIdleTimerTimer
(0038109C) System::Classes::_18201
(000324B9) USER32.dll
(0002490E) USER32.dll
(0002429D) USER32.dll
(0002406B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

chmod on multiple folders

WinSCP 5.13.3

Error message:
Out of memory

Stack trace:
(003F3688) System::UStrSetLength
(003F3688) System::UStrSetLength
(00736643) TSecureShell::AddStdError
(00734CE9) TSecureShell::FromBackend
(006EA7C0) _from_backend
(00646859) _ssh_sharing_queue_global_request
(0064A6B0) _ssh_agent_forwarding_permitted
(0064F5D7) _sshfwd_x11_is_local
(006427F2) C2484_0
(006429A5) C2484_0
(00642CC0) _ssh_connshare_log
(00671E2D) _select_result
(0073814E) TSecureShell::HandleNetworkEvents
(00738412) TSecureShell::ProcessNetworkEvents
(00738D11) TSecureShell::Idle
(007B3F7F) TTerminal::Idle
(000990CC) TTerminalManager::Idle
(000175BF) TCustomScpExplorerForm::Idle
(0003EDF7) TNonVisualDataModule::DoIdle
(0003EDB4) TNonVisualDataModule::SessionIdleTimerTimer
(00380370) System::Classes::_18201
(0003AF19) USER32.dll
(000373E5) USER32.dll
(00036C99) USER32.dll
(00036A7B) USER32.dll.DispatchMessageW

(008BD0C5) C5104_0
(008BE69F) _ReThrowException
(00099111) TTerminalManager::Idle
(000175BF) TCustomScpExplorerForm::Idle
(0003EDF7) TNonVisualDataModule::DoIdle
(0003EDB4) TNonVisualDataModule::SessionIdleTimerTimer
(00380370) System::Classes::_18201
(0003AF19) USER32.dll
(000373E5) USER32.dll
(00036C99) USER32.dll
(00036A7B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.