DelayN bug with audio rate delaytime of zero

[Sciss]

Compare:

{
    var condAcc    = Phasor.ar(start: 2, end: 8);
    var condAccT = DelayN.ar(condAcc, 1, 0);
    condAccT
}.plot(duration: 0.0005, discrete: true)

{
    var condAcc    = Phasor.ar(start: 2, end: 8);
    var condAccT = DelayN.ar(condAcc, 1, DC.ar(0));
    condAccT
}.plot(duration: 0.0005, discrete: true)

The first example correctly outputs the input signal without delay. The second example incorrectly delays by one sample frame.

[telephon]

still reproducible.