Odd behavior from cutoff knob


I’m experiencing a rather bizarre bug with my Parva (v. 0.66). When i turn the cutoff parameter below ~30 or so, unexpected notes emerge whose trebly nature seem paradoxical to the very low LPF setting.
It’s easier to simply show the problem than to describe it, so I attached a short video demonstrating the problem. What’s going on here??


That is odd, but I’m not able to reproduce it here. Are you modulating the cutoff with your sequencer? Anything going to CC 70 or 74?