This question already has an answer here:
I have ncurses apps (say, aptitude) working nice in plain xterm (or gnome-terminal, or any other terminal I've tried), but if I run it inside tmux session, screen isn't properly refreshed while I do some navigation through the menu.
(full resolution: http://i.imgur.com/jKLCX3A.png)
The same happens with other ncurses apps inside tmux: say, cgdb. And again, without tmux they work nice.
How to make it work correctly in tmux too?
(OS is Linux Mint 13, if that does matter)