Same problem posted here
This issues come with this new version (less than 1 day is 1 minute in the red square and so on...). With old version the time in the red square was correct.
You can see my last post there with screenshots.
We have API client with our management system and it capture the time inside the red square so, if we do technical support we see the wrong offline timer (and we need to go to notification tab to see the right disconnected time or inside the AP if is upgraded to 16.0.0.1).