Apps opening web pages in Chrome

When I tap on a link in an app to open a web site in Chrome, it opens in a new tab - great! However if I open another link, it opens in the same tab, over writing the previously loaded page. Further more, the back button doesn't work (hardware button goes back to previous app, settings menu button is greyed out), it is as if the tab was destroyed and another made.

Samsung Galaxy Note 2, Android 4.1.2 rooted, latest stable Chrome.

 

There is no new tab option. By a link in an app, I mean something like in a Twitter client - not in Chrome.