BM3 doesn’t like half or quarter bar syncing...
I already posted to show that the Past to song function doesn’t stick to the play head position if it’s not placed on a bar with a round number. If the play head is on bar 12.3, pasting to song put the scene on bar 12. I just noticed it’s the same with syncing in general. On the song, I have a 8 bar loop playing, which starts on a half bar (283.3 to 291.3). Then, if I play patterns from the scene mode, switching from one to another will not be synced properly. Watch this video, it’s way more clear that my explanation...
https://drive.google.com/open?id=1CdDEJdjUj4pUKhMduXAqVK2zpm6q-c8P