I'm sorry I can't tell you why that is happening, but I can assure you that it is not because of btrfs. Btrfs does not have any reserved filenames, and since home folders depend on your username it would definitely not know when to create the synlinks if it was meant to.
I'm sorry I can't tell you why that is happening, but I can assure you that it is not because of btrfs. Btrfs does not have any reserved filenames, and since home folders depend on your username it would definitely not know when to create the synlinks if it was meant to.