Keyboard modifier keys reset on startup
MacOS 10.12.3, Apple Magic Keyboard
Using the System Preferences -> Keyboard -> Keyboard -> Modifier Keys... button, I change the Caps Lock key to "No Action".
This works... until I restart, when the standard behaviour (Caps Lock is Caps Lock) returns. Any idea how I can make this change permanently using the System Preferences dialogues box?
[This forum has some reference to this issue from 2011, but I am hoping there has been some progress since then).
IMAC (RETINA 5K, 27-INCH, LATE 2015), macOS Sierra (10.12.3)