Hide Idea Created Alert Notification After Browsing to Another Page

The Idea Created green notification shown when a new idea is added does not appear to go away until the user clicks close.

It is somewhat confusing to be browsing in another tab 15 minutes after creating an idea and still seeing the Idea Created notification (in Chrome on macOS).

I suggest the notification should either close after a certain amount of time or after browsing to another idea from the main page or the created idea.