After assigning F1 and F2 a keyboard shortcut combination, when using this shortcut, I press and hold the fn key and the F1 or F2 key, the keyboard sends the keystroke only once. It should send it repeatedly until I remove my finger from one of those key. Because it only sends the keystroke once, I have to click the F1 or F2 keys, again and again, if my intention is to get more than just one instance of it. Press and holding has no effect on the outcome.