I have a problem with firefox, I'm using this event(OnClientCommandExecuting) to cancel some(not all) shortcuts and works perfectly with chrome, when i try with firefox works very well with the shorcuts, except for the Shift+Enter when i press this key combination in firefox the event is not even fired, could you help me please?
function OnClientCommandExecuting(editor, args)
{
var liTag = editor.getSelectedElement();
var commandName = args.get_commandName();
.....
}