Possible to miss 0-expiry-time notifications by pressing ENTER at the wrong time

[intuited]

If a notification with 0 expiry time, for example

    notify-send -t 0 "Please acknowledge."

is handled while the user is typing, and the window manager is configured to grant focus to new windows, the user may press ENTER just after the alert box pops up, dismissing it without having read or even noticed it.

There should perhaps be a minimum display time for messages which must be acknowledged, during which time it is not possible, or at least less convenient, to dismiss them.

Alternatively, the initial keyboard focus in the alert box could be given to some other control. However, this is not foolproof, as the user might press TAB and then ENTER in quick succession.