According to that chart you have to change your Mark as Read setting... who knows where it might be though
Re:I could do that in a weekend (2016)
by hombre_fatal on Thursday April 30, 2020 @12:44AM
(#23027518)
There's a top-level tab called "Mark as Read" in the preference pane.
I expected mobile notifications to fire no matter what... but they will only fire if you are not on any other client (desktop) and if the app is not running on the foreground.