But, I'm not sure anymore because I tryed again (but not as extensively) and nothing happened.
I tryed to replicate that error too, but everything seems to be fine. If you have some news about this bug I will fix it, but so far I can't catch if it really exists. Regards
Yo, about that Bxx bug where it would re-loop a bit late, now it seems to be looping a bit early instead. You can't really tell though with just one channel playing though. Listen to a song with full channels playing and looped with Bxx.
The VGMs exported using Bxx ARE looping. Check "Hill Top Zone" module and export it to VGM to check that out. I done a test few seconds ago, and yes, the Loop inside DefleMask is a few samples faster than in the exported VGMs. I will add the remaining row samples to fix this.
The GB have a "custom wave" PCM channel, called simply "WAVE" in DefleMask, in that channel you can play samples if you want, but never a custom wave and a PCM at the same time.