Say that 2 nobles want to stack and move off.
Let's say they're in the same place:
unit A
stack B
unit B
move n
This still works. But let's assume that A is in a tower in a city and
B is in the city:
unit A
move out
stack B
unit B
move out
move n
This used to do what you wanted, and in fact had a chance of
triggering the bug. Now it will not necessarily work, and if the bug
would have happened, it will fail.
[ I guess there is an implied ordering that sublocations go before
locations or the bug would show up much more frequently. ]
So beware. If units are not in the same location, they need
synchronization. If units are in the same location, things pretty much
happen like they should.
-- Greg, not Oleg