The new keyboard on macbook and external keyboard has a different layout of arrow keys [1] vs the older macbook pro keyboard [2]

[1] - https://www.evernote.com/l/ABV1fPm7JnBO76pqevjy990uALmIK39uZ...

[2] - https://www.evernote.com/l/ABVer15u9rhODaV3U5QafcRx8eVu3HVq6...

As for the touch ID - try double clicking the home button with a finger that has no touch ID, it does not show a PIN entering screen. I used to double tap all the time before to quicker unlock the phone and swipe to enter a pin, now its' quite annoying and not as fast.