Auto or update of Discover not work if you don't restart or shut down computer

[wonder]

In this case ... I think my tests ... more than tests ... are not 100% reliable ...

[wonder]

I think...continue...not appears update notifications...
I was have my desktop 4 days with not shutdown or restart, only sleep.
In this 4 days, any update notification, I have an old laptop with lubuntu 20.04, in this days, have update notifications.
Now, in this moment, I open discover and...the same updates that my old laptop.
If I not open discover or restart computer, not have update notifications...