Change to mod+Shift+n behaviour.

i3/config

@@ -122,7 +122,7 @@ bindsym $mod+l focus right
 set $get_layout $(i3-msg -t get_tree | jq -r 'recurse(.nodes[];.nodes!=null)|select(.nodes[].focused).layout')
 bindsym $mod+m exec "i3-msg focus parent, focus left"
 bindsym $mod+Shift+m exec "STK=$get_layout; i3-msg layout stacked, move left; MST=$get_layout; i3-msg layout stacked, focus up, focus right, layout $STK, focus parent, focus left, move right, focus left, layout $MST"
-bindsym $mod+Shift+n exec "MST=$get_layout; i3-msg layout stacked, move right, focus parent, focus left, layout $MST"
+bindsym $mod+Shift+n exec "MST=$get_layout; i3-msg layout stacked, move right, focus parent, focus left, layout $MST, focus parent, focus right"
 #bindsym $mod+comma exec "MST=$get_layout; i3-msg layout stacked, focus up, move right, focus up, focus left, layout $MST"
 #bindsym $mod+Shift+comma exec "MST=$get_layout; i3-msg layout stacked, focus up, focus right; STK=$get_layout; i3-msg layout stacked, focus left, move right, move up, focus down, layout $STK, focus parent, focus left, layout $MST"