<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 5.13.3

Error message:
Out of memory

Трассировка стека:
(003F4ABC)
(003F4ABC)
(003F4BED)
(0036BA17)
(00361477)
(00362DCB)
(00362E59)
(00213CC2)
(0000424A)
(008247C2)
(00408EB8)
(0082B361)
(000D0853)
(000D10C0)
(000D1292)
(000D2D98)
(000A44EF)
(0001D6F4)
(00097121)
(007B8328)
(0021EF6E)
(008574B2)
(0025B025)
(002154EC)
(0085AECC)

Status: unknown_rel_addr

The problem happens rarely. I cannot reproduce it.