The clock disappears from the lock screen unless I re-apply the theme in KLWP, but if I reapply the theme the clock will stop updating. Then when restarting the device to get the clock to update again, it will just cause the clock to disappear from the lock screen again.
Kustom by default will not show root elements in the lockscreen please go to the "layer" tab and select "ALWAYS" in the visibility section instead of "when not locked". If then it shows but its not updating it means that Note 8 lockscreen is not correctly notifying the launcher that its visible, that is something i cannot fix.
That was it, thank you!