Default [solved] Continious scrolling of home screens suddenly stopped.

Hi,
Up until several days ago/yesterday you could scroll through the home screens in a circular manner( ie swiping the finger in one direction while the last screen would be replaced by the first one). Now all the sudden I see that my screens are like between two walls, when you reach the right or the left end you can't continiue further.

What happened? Is this some change in the settings someone made accidentally?
I've been through them and I see none....

Android 4.1.2.

Thank you!