_NotifyPopup disappears

[mdijkens]

I have several utilities run automatically at logon (Win) and started to include _NotifyPopup to inform me of warnings/errors.
This raises some questions:
1. Every now and then, a notification is created but automatically disappears from the notifications pane. What could cause this?
2. _NotifyPopup also creates an icon on the taskbar (right side) but when I hover over that icon, it disappears and so does the notification in the notification pane.
3. When I click on a notification in the notification pane, it disappears. Can it be linked to something?
4. When notifications disappear, is there any place I can still find them? For example in the Windows Event Viewer?

[mnrvovrfc]

3. When I click on a notification in the notification pane, it disappears. Can it be linked to something?

This is intentional. Otherwise it would be extremely annoying to users (including me) who would then look for the setting to disable it permanently.

When a notification appears for a rather short time, it might be the OS distracted by something, by a similar event of alike. Windows is very good at messing around with USB disks plugged in and the physical contacts aren't very good. A few times while Windows Defender does its searching it could suddenly disconnect an external drive. Maybe I'm being paranoid but I can't have one of those drives in a session much longer than an hour. It's unreliable.

[SpriggsySpriggs]

I'm glad I don't have all these issues with Windows.