cmatrix malfunction

[hoijui]

hey! :-)
i tried with a screencast i made using cmatrix, and it seems to work well the 1st second, but starting from the 2nd second, it creates some kind of scrambled version of what it should look like. i imagine it has something to do with cmatrix resetting the screen, or randomly replacing characters on the screen, once it reaches the bottom of the window.