Version:           unspecified (using Devel) 
OS:                Linux

The desktop grid effect doesn't display windows if not in the current activity (correct), but when you click on an area which could contain a window from another activity, it switch to that application.

Reproducible: Always

Steps to Reproduce:
Tested on 4.5 RC2 - Steps to reproduce:


1) add a second activity
2) open some apps (call them A and B) in the same virtual desktop.
3) set A to be displayed on the first activity and B on the second
4) activate the desktop grid on the first activity

-> you will see all the apps (A) from the current activity

5) click on an empty space (which could contain the B app if you would have activated the grid on the second activity)

Actual Results:  
you will switch to the second activity

Expected Results:  
The correct result should be to doesn't consider application on other activities at all

Sorry for the big screnshot, I'm using a dual monitor setup.