konsole blinking screen with irssi when ssh'd to NetBSD

[Glenn Holmer <cenbe@kolabnow.com>]

I've got a freeshell.org account, and they're running NetBSD. When I SSH
into that account, the terminal looks fine, but when I start irssi, the
entire screen blinks on and off about once a second. This is from my
Debian Stretch box running KDE, with konsole as terminal and bash as shell.

I've got another machine here that runs GNOME (under Fedora); I tried
the same thing using gnome-terminal and the screen didn't blink when I
started irssi.

Can anyone offer some suggestions to solve this?

-- 
Glenn Holmer (Linux registered user #16682)
"After the vintage season came the aftermath -- and Cenbe."