I came across a possible bug. I had a Goto Cue # written in the command line in order to jump forward in my sequence at a later point.
The Go+ key in the master area executed the command line instead of going to the next cue in the active sequence.
GMA2 behaves as expected, playing back the cue with the Go+ key and jumping to the Goto Cue with the please key.
Did I miss a memo?