I noticed this in the Beta, and it seems to be persisting.  I was paying more careful attention to confirm (though I did not preserve a screenshot, sorry) that the unit counts given at the start of combat are inconsistent.  The unit counts for "Yours" seems to count every individual appearing, counting x3 groups as 3, but for the enemy it counts the x3 groups as 1 which is, obviously, not consistent.

The campaign in 1.0 adds a new twist that it counts all the units in your army, even if it excludes them from actually appearing in tactical combat.  A meticulous tester might find out if it simulates the full army (and does not exclude units as it does in manual tactical battles) in Auto-Resolve, but I'm not sure how to determine whether it simulates the full army.