Using Sumu b20 in Logic Pro 11.0.1 in OS X 14.6.1 on a Mac Studio M1.
If I load an stereo instance of the plug-in and then switch the output to Surround I get a sawtooth type sound coming from other channels randomly. Sometimes it's only when I have another instrument receiving MIDI. Really weird and no other instruments are exhibiting this behavior in Logic.
OK thanks, I'll check into it!
I don't really think it's that weird - just a VST channel situation I never tested. I must need to clear those buffers or something.