title: Annoying padding between tmux bar and bottom of terminal window when maximised
body: <p>I am using tmux inside of a gnome-terminal.</p>
  
  <p>When I first open a window (with the default size being 80x24) the tmux bar sits snugly at the bottom of the window. When I maximise the terminal window, however, an annoyingly large gap appears underneath the tmux bar. </p>
  
  <p><a href="http://i.stack.imgur.com/l1qJf.png" rel="noreferrer">maximised gnome-terminal tmux session with gap under tmux bar</a></p>
  
  <p>This is my .tmux.conf:</p>
  
  <pre><code>set-option -g default-command bash
  
  # remap prefix to Control + a
  unbind-key C-b
  set-option -g prefix C-a
  bind-key C-a send-prefix
  bind-key C-a-h split-window -h #Split panes vertically
  
  # time/no(0) time between C-a and command
  set -s escape-time 0
  
  #set-option -u repeat-time #global setting, "delete" repeat-time
  
  set-option -g -q mouse on #activate mouse
  </code></pre>
  
  <p>How do I get the tmux bar to sit as it does in the small this when I maximise the terminal window? </p>
  
  <p><a href="http://i.stack.imgur.com/LFYz0.png" rel="noreferrer">80x24 gnome-terminal window with tmux bar located correctly</a></p>