<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 5.13.4

Error message:
Accès mémoire invalide.

Trace de la pile :
(0029A170) Vcl::Comctrls::TListColumns::Owner
(00085B2F) ntdll.dll
(00073A61) ntdll.dll.KiUserExceptionDispatcher
(00299DD4) Vcl::Comctrls::TListColumn::DoChange

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 5.13.4

Error message:
Invalid access to memory.

Stack trace:
(0029A170) Vcl::Comctrls::TListColumns::Owner
(0008A61F) ntdll.dll
(00077E7A) ntdll.dll.KiUserExceptionDispatcher
(00299DD4) Vcl::Comctrls::TListColumn::DoChange
(00299FB8) Vcl::Comctrls::TListColumn::SetWidth
(0085B548) Vclcommon::C2788_0
(0085BC68) Vclcommon::C2788_0

The problem happens rarely. I cannot reproduce it.