command-2 (previous) and command-3 (next), jumping by 2

[Christopher Mitchell]

Has anyone else experienced the "previous" and "next" card keyboard 
shortcuts going by 2? so it jumps from card 1 to 3 to 5... and back to 
3 to 5.  Everytime I leave the property inspector and click on the 
stack to unselect objects, then click command 3, it jumps 2 cards ahead 
- until I've cycled through the stack a few times then it goes back to 
one.

Hope this hasn't been in the archives, but searching anything with part 
of the string being "card" turns up a lot of false hits.

Yours,
Chris