Funny refresh issues when scrolling in gterm with mcedit

[Dexter Filmore]

Oddity here:

when I am using mcedit in a gnome terminal window and scroll up or down, some lines are doubled and spread all over the
screen.
So after a while it becomes a complete mess.
Strange: only happens on gtrems, not on eterms, not on ttys.

Anybody got an idea what happens here?

Running mc4.5.55 on Slackware 8.1

This should be mentioned: it did *not* occur with Slackware 8.0, but I really can't tell what makes the difference here.

Dex