Fixing scrolling in nano running in tmux in mate-terminal

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http://unix.stackexchange.com – The problem: I open a terminal (in Linux Mint, so mate-terminal) zsh is the shell Then I run tmux Edit a file with nano Scroll up and down that file with the cursor Issue: When scrolling down in nano, only the bottom half of the terminal window gets refreshed Issue: When scrolling up in nano, only the top half of the terminal windo gets refreshed The complete nano view of file does not get refreshed in my terminal window when scrolling. Any tips? (HowTos)