"Smart duplicate" fails at high speed
Operating system version
OS X 10.6.8
Description of the issue
When you duplicate a layout object, move the duplicate, and then continue using the Duplicate command, subsequent duplicates will keep using the original offset amount for nicely-spaced objects in a line. It fails, however, if you hit Duplicate too quickly.
Steps to reproduce the problem
Put a smallish object somewhere near the left side of a layout. Select it and duplicate it (Command-D in Mac, Ctrl-D in Windows), then move it so that it's a bit to the right of the original, but inline horizontally. When you duplicate again, the duplicate should be offset by the same offset amount, as it did in previous versions of FMP. Great!
Now hit the duplicate shortcut key repeatedly. If you do it fast enough, eventually the offset will go screwy, and objects will start veering off in some direction (the direction varies depending on which direction your offset was supposed to be going).
Have someone stand by your desk and say, "Easy there, champ. It's not a race."