If I start a playlist on one player, sync another to it, stop the first player and then view its Now Playing screen on the player (or indeed Controller, or iPeng) when the next song in the playlist starts the Now Playing information will begin to lag by one song... and stay like that for the rest of the playlist. I.e. the NP screen shows the information for the previous song (...it has become a Last Playing screen!).

Triode has made a Switch Player plugin which makes tranferring a playlist between players a simpler task. I installed this after discovering the problem. The problem still occurs when this plugin is used.

The problem is not apparent on my 7.4 installation.