Notifications of own posts always sent immediately

Hello, many thanks for your work! And reporting a bug:
I would like that members do receive notifications of their own posts which is easy to set in their member profile settings. However, the notifications of their own posts are always being sent immediately, no matter the users’ group email settings. All other notifications by others’ posts are being sent as subscribed (daily or weekly) but their own always immediately – this has, however, no sense. I just wish everyone’s digests complete including own posts.
Regards,
Stefan.