This is still a problem with the latest version! I am forced to use Lync every day and the copy & paste issues make it completely unusable. It is the worst-in-class IM client, worst-in-class screen sharing tool, and worst-in-class, well, everything.
Even basic stuff like keeping track of when you're actually in front of your computer or idle doesn't work properly in Lync. I'll be typing away for hours and it thinks I'm "Idle: 2 hours" to other people in my contact list.
Then there's the whole, "You can't add this person to your contacts because they have been added to too many other people's contact list" problem. W T F ? How is that even possible in this day and age? Sigh.