Everything is working fine outside of tmux. But in tmux I can't resize vim splits with the mouse. I have set mouse=a in my .vimrc. Is there a solution for this? .tmux.conf: $ cat ~/.tmux.conf set-option -g mode-mouse on set-option -g mouse-resize-pane on set-option -g mouse-select-pane on set-option -g mouse-select-window on