z3ta+2 : Matrix destination "Osc n PW" kills Osc n

 
I've just discovered that the Destination "Osc [1-6] / Pulse Width" in the Modulation Matrix acts like a switch on the oscillator in question if nothing is set to modulate it (matrix/Source = "off").
 
This is not the case with any other matrix/Destination (OscN / pitch, vol, pan, etc.) which simply are not modulated if matrix/Source is set to "off".
 
The easiest way to have this happen is just to intialize the program, set Osc1 to anything, then turn on the first matrix/Destination to Osc1 / Pulse Width.  Osc1 will immediately stop sounding.
 
The situation I discovered this with is I had Osc1 FM Osc2, then set LFO1 (sine) to modulate Osc1 Pulse Width.  This is an interesting sound.  The problem is if I turn the LFO source in the matrix to "off" to compare my sound with and without LFO, I lose my FM since Osc1 is turned off.
 
A workaround for this particular situation is just to set the LFO Wav1 to "off" but I imagine it might be a bit more effort if I had a complicated LFO set up.  Or I can set matrix/Source to "off" and matrix/Destination to anything but Pulse Width.
 
Edit: I guess it's easier just to slide the matrix/Range to zero to turn it off, but I'll lose whatever it was set to.