Sorry if that's not what you call it, but I think you know what I mean - the link button in the middle of your two drivers strats that make them mimic each other.
Just wondering if this is a bug or not. When you have this applied so the two strats mimic each other, it blacks out driver #2 so you can't change anything. However if you do an unscheduled pitstop, it doesn't force both drivers to pit - Only the #1 driver that you physically clicked PIT for. If you want the #2 driver to pit aswell you have to physically undo the chain-link, tell your #2 driver to pit aswell, and then reselect the chain link option.
Seems a little silly considering the whole idea behind it (so I figure any way) is to copy everything and save you from having to do it all twice. Unless I'm missing something.