Consider this bit of code:

c = new OfflineAudioContext(1,44100,44100)
c.startRendering().then(function () {
  c.suspend(1);
});

This produces the error message:

cannot schedule a suspend at frame 44032 (1 seconds) because it is earlier than the current frame of 44160 (1.00136 seconds)

Since the context is only 1 sec long (44100 frames), this message is a bit confusing because the user can never see that the current frame ever goes past 44100.