Doesn't work on Galaxy Note 4 / CyanogenMod

[bh4017]

My device:
UK Samsung Galaxy Note 4
Android 5.1.1, CyanogenMod 12.1

Xposed Framework:
framework 79 installed and active
NFC LockScreenOffEnabler 1.9.7.7

Symptoms
After installing framework by flashing in recovery, booting the phone, installing the framework app, installing NFCLockScreenOffEnabler, setting up for "Enable NFC when screen is off" and rebooting to enable changes, the device does not respond to any NFC when the screen is off. Tried the "screen on but locked" setting, but this also does not work.

I have not yet verified that the framework is operating properly, other than to confirm that the status is "Xposed framework version 79 is active". I need to find a small module I can download and confirm working so that I can rule the framework out.