List index out of bounds (-1)

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
Opening 2 tab with diff server. After moving out files from server, I decided to destroy VPS while still connected, no disconnection notification whatsoever, then finishing task on active VPS (another tab), then changing tab, then error occured.

<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.17.9

Error message:
List index out of bounds (-1)

Stack trace:
(0038CBD4)
(0038CBD4)
(000AC5FE)
(00020F8C)
(0027ACF1)
(00275DE8)
(0027AE57)
(0027ACF1)
(002351B8)

Status: unknown_rel_addr

The problem happens rarely. I cannot reproduce it.