Invalid access to memory.substring(70220)

I've used WinSCP for a couple of hours. I right-click in the server window (right side).

When I click the bug away, and try to right-click again, the bug happens again.

WinSCP 5.17.8

Error message:
Invalid access to memory.substring(70220)

Stack trace:
(00F78953) C3651_0
(00F89E6E) C5296_0
(00F8BED6) ____ExceptionHandler
(00F88C90) __ExceptionHandler
(000861AF) [779F71

Status: all_insignificant

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Thanks for your report.

This bug is being tracked already:
https://winscp.net/tracker/1915