Clicking a notification should open link in a new tab (not an existing one)

Following up on my previous topic Frustrating behavior: clicking a notification replaces an open page in browser, can't retrieve it?

Clicking a notification (that links to a new post or a new message) should open the new post/message in a new tab, not one of the existing tabs currently opened. 

The way it works now, if you're writing an article in Pages and click a notification, the new post/message replaces your article, and you lose all unsaved changes to your article.