There is one UI inconsistancy I just noticed which I have not seen yet reported;

When the device is locked and you access the top menu all of the same settings that you have selected are shown, however you can only operate some of those.

For example switching the torch on/off or changing ambience is possible, but wlan toggle on/off or entering airplane mode is not allowed.

This behaviour is OK, as I see those operations are priviliged and should not be allowed unauthenticated. However I'd like to see those icons grayed out or otherwice made "unaccessible" insead of "seemingly" being operatible without actually working.