Some calls not listed under "Recents"

Am I missing something here?

A caller calls in, I’m not able to answer, they leave a voicemail.

On the app, I receive a notification there is now a voicemail waiting for me.

I open the app, I see the red dot under “Voicemail.” There is no red dot under “Recents”

I would figure since I missed the call, there would be a red dot (notification) under “Recents, missed”

The same thing happens after hours as well. I would expect during business hours AND after hours that the app would record all calls made to my number. Besides, the app “Recents” lists “All, In, Out and Missed”

Am I missing something here, normal operation or is this a bug?

Thank you for your time!