I'm still seeing this issue as well. I've actually seen it move 2 squares offset from the 'target' square once or twice, and a one square offset happens more often than I'd like. This is REALLY anoying in combat. I suppose I could think of this as 'miscommunication' of my orders, but that makes it seem even more like a cheezy kludge.
I generally go for an overhead view on the strategic map, so I don't see this issue usally in strategic, but I generally don't rotate the camera when in tactical, which perhaps I should do more often until this problem is resolved.
The other solution would be to have a checkbox in options that defaults the camera view to overhead instead of at the 45% offset angle.