It's a creative workaround, for sure. Might need to be a wish list request, in the end. It seems like intentional behavior, but my concern was mainly the duplicate posts. Makes it hard to keep the topic together.
I managed to force the dot by editing the config file with musicbee closed, launching it & synchronizing immediately
and.... the end result wasn't so great
it seems (although I'm not entirely sure, I may be mistaken due to the unknown internal workings of it) that musicbee wifi sync would not see the files & resync the whole selection each time....
I had better results with just renaming on the device from .music to music then sync then rename back to .music, the syncing seemed faster
So in the end, it seems like this would indeed need to be a wishlist request as you saidEDIT:
Worked fine with a cable though (so editing the config file to .Music then skipping music bee wifi sync)EDIT2:
and as long as I don't go into device settings, the ".Music" configuration stays in between restarts of musicbee