The ST documentation, in my opinion, is lacking. But I accept that. I think adzenith’s point is that without any global shortcut grabbing it before it reaches ST, it does work properly. As Mission Control is a feature in OS X, perhaps it should be noted. But in general, I don’t know that an update is required simply because of some global action. Also keep in mind that jps most likely chose key combinations that would be intuitive to the user, knowing full well that it is easy to customize on a per user basis.
Personally, I don’t try to rely on the official documentation to much . I use the unofficial docs or simply explore myself. For example, it’s very simple to remap those commands (and really any keyboard shortcut). For your particular case, you will want to create a User keybinding. This file will be created for you by going to “Preferences -> Key Bindings - User” This is a JSON file consisting of a list of objects.
{ "keys": "ctrl+shift+down"], "command": "select_lines", "args": {"forward": true} },
{ "keys": "ctrl+shift+up"], "command": "select_lines", "args": {"forward": false} }
]
Of course, change the keys to whatever suits you. You can find the command and arguments in one of two ways. First, you may look at the key binding file (Preferences -> Key Bindings - Default). Then look for the key combination you want to identify. Alternatively, you can enter “sublime.log_commands(True)” in the console. This will also display the commands and arguments. For your particular case, the first option would work better.