The effects that you both have described are not similar to the events which happen when the station replies in a QSO. Nothing other than a normal everyday ham radio response appears, except that on occasions the response begins in the lower half of the screen. Insted of having the normal spacing like this, the following line would be as the above spacing " the response begins in the lower half of the screen. "
When the text reaches the bottom of the screen it then makes, maybe, two or three jumps to get to the top. Its very irritating and that's why I clear the screen when it starts. Perhaps Mix W is not used much in the US, or if it is perhaps its a problem which only occurs in the cyrillic version. Perhaps its the way the user has set it up, and its been done cack handed ! Kind regards, Mel G0GQK