Does explore time not reset when you go offline? This happened yesterday(my first day), I'd finished exploring and left the tab open in the background as I went to do something else while I waited for the time to refresh. When I came back I was timed out, which was expected. When I logged back on, though, my time had only gone down like 20 minutes even though I'd been gone for at least 2 hours. Is this a bug or a feature?

TL;DR: I was timed out and my explore time didn't reset, why?