I'm not sure if there's an issue. When I turn on my 5k iMac (late 2015), doesn't detect my magic mouse 2, even if I move it, until I click it. The same occurs with my magic keyboard: I have to press any key to be detected. Is this normal? I have an iMac Mid 2011 and detects the mouse and the keyboard, even the imac's 5k new ones, immediately without clicking o pressing any key. Could you help me please?