With Focus-Follows-Mouse set, if I click on the Cashew (top-right) and select 'Activities', when I try to move my mouse to the panel that appears at the bottom of the screen, my mouse focuses on the desktop or another window and causes that Activities panel to disappear.

Reproducible: Always

Steps to Reproduce:
1. Set Focus Follows Mouse
2. Open the list of Activities
3. Activities list/panel disappears
Actual Results:  
Disappearance of panel.  If I move the ouse very fast, I can sometimes get it to the bottom of the screen before the panel appears, but this isn't ideal.

Expected Results:  
The panel shouldn't disappear immediately, perhaps give it a 5 second time-out or something?

This is the first attempt I've tried really to use Activities.