Not a problem here, as my mixer has it’s own monitor… : ) Dual monitors rule for mixing!
My “hotspot” problem with C7 mixer is I now have to watch out where I engage a horizontal scroll (using an Apple mouse). Constantly messing up pans and send levels depending on where the cursor is … One of the reasons why I’m finding it really hard to move on from v6. 
Whereas before I could whip around the mixer with a quick flick of the finger, now I have to interrupt my flow of thought and think about how I’m going to scroll to off-screen channels. Blah!