Desktop notifications doesn’t appear at all when Mirror Displays option is checked

displaynotifications

When the "Mirror Displays" option is not checked, I am getting desktop notifications on the display which has the "white bar" in System Preferences/Display/Arrangement – and that's working fine, but when I turn on "Mirror Display" option, although both displays do have the "white bar" in Arrangement settings, I do not get desktop notifications on any of them.

Is there a solution for this?

This is how my System Preferences/Display/Arrangement settings look like – two displays, both with white bar on the top, but still not getting any notifications:
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Best Answer

By default, Do Not Disturb is enabled when your display is being mirrored. This is to prevent personal notifications from popping up during a presentation. :)

You can disable this in the Notifications section of System Preferences:

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