<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 5.11.3

Error message:
Out of memory

Stack trace:
(003EDEB2)
(003EDEB2)
(0037AAEB)
(00217110)
(007E4FCC)
(00257CC9)
(00212190)

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 5.11.3

Error message:
Out of memory

Stack trace:
(003EDEB2)
(003EDEB2)
(0037AAEB) System::Classes::TComponent::UpdateAction
(00217110) Vcl::Forms::TCustomForm::CMActionUpdate
(007E4FCC) TEditorForm::Dispatch
(00257CC9) Vcl::Controls::TWinControl::WndProc
(00212190) Vcl::Forms::TCustomForm::WndProc

The problem happens rarely. I cannot reproduce it.