Not sure if this has been posted or not.  Search wasn't working today.

Trying to click auto explore on a unit that already has move orders does nothing.  No feedback, but auto explore isn't engaged either.  Seems like the player should either be given a warning that "this action cancels the unit's current orders" with an option box to continue or cancel or that the game should just assume that clicking auto explore isn't an accident and go ahead and cancel the current orders.  

I've reproduced it on trained units, heroes, and boats.  I can post a save game if it will be useful, but it has been a consistent problem across multiple v1.1 games.