Create five tracks : A, B, C, D and E
In the Mix Console :
- Hide tracks B and C
- Cick on track A (in the console)
- Shift+Click on track E to select A, D and E
You think that you have selected A, D and E ? No, you have selected A, B, C, D and E
(And, obviously, if you use Q-Link you modify tracks you don’t want to)
Same on Windows 7.
I sent a request to the support 5 days ago. Wait and see 
23 days and still no answer 
(yes I know, may 1st, week days, etc.)
(but, still…)
40 days = no answer !
At last, 48 days : “This bug is confirmed and we are currently working on a fix. This fix will be soon available. Please keep your Cubase updated.”
Victory !