Windows 2008 SP2 Terminal Services Manager not sorting idle time properly?

I could swear (with SP1) that if I click on the IdleTime column header to sort the idle time it used to work properly.

Now it's sorting by first number: 1, 10, 11, 1:02, 2, 3, etc...

Is this a new bug in Windows 2008 SP2? How does one report a bug?