When use internet is OFF, it can be manually overriden from the command bar. This is good. It means I can type update now, update resources or sync now from the command bar. More importantly for many, it means they can have syncing turned off for privacy reasons, but still have Logos update.
However, there's a bug. With internet turned off, update now and update resources only check for a new program update, they don't check for new resource updates. This is inconsistent and confusing behaviour, and therefore (I assume) a bug.