Let's say I have this code (imagine the IDE window is narrow so the line is actually wrapped):
myMap.put("dickens", "It was the best of times, it was the worst of
times, it was the age of wisdom")
If I put the cursor on the myMap line and copy, I'd expect the full line to be copied, as it is for short lines. But the only thing actually copied is the text up until the wrap. Likewise, if I try to move the line using Alt+Up/Down, I'll completely trash it as parts gets left behind.
Interestingly, the line numbers respect the wrapped lines just fine, showing that the code above is indeed a single line.