If I've selected a song in the Songs area and not the first song and then select another song, the first song data shows even though the song I selected is highlighted.
For example, I select the last song in the list, then select the song above it and the data for the first song shows. It occurs randomly, so forces me to really pay attention if I'm doing a quick edit to a song.
Running SLM 4.0.5 on IPad 3 iOS 7.1.2.