There is a bug: after some running time, a synth was not freed, and a note just got stuck for a while. This is not a problem with the sequencer test, but a weird situation where SuperCollider could not find a running node and free it, so it just kept playing.
totalPatternTime: 3.875
current event index: 0
FAILURE IN SERVER: /n_free Node 1722 not found
totalPatternTime: 0
current event index: 1
totalPatternTime: 0.5
current event index: 2