I programmed a preset for WinAmp's AVS which I enjoy a lot. But I wondered if I could convert it to the MilkDrop 2 system. Well, that turned out to be not as easy. And I may have noticed a serious bug.
The MilkDrop 2 plugins in WACUP and foobar2000 differ obviously. While this reports version 2.41.4 and supports up to 4 custom shapes and waveforms which it saves explicitly, that one identifies as version 0.8.14 and supports up to 16 custom shapes and waveforms which it saves minimalistically. {PS: foo_MilkDrop2 is indeed an enhanced fork.}
The elephant in the room here is that the phase display I programmed displays a long diagonal line when the visualizer window frame is clicked or moved, and the right channel spectrum is not visible, so I have to assume that the right audio channel contains garbage values beyond 481 samples of the waveform window (looks fine up to 481, starts messing from 482 samples upwards).
{PS: From time to time there are even more mysterious issues. With the last update I installed yesterday, I see only one quadrant in use, as if all of the values are positive only.}