OpenHab1.x - Notification setup

I use websocket for subscribe to an Items, but only the first client receive the data.

If I start my Javascript code on two Chrome windows, openHab send the data only to the First windows.
If I close the First windows, immediately the second Chrome windows receive the websocket frame.

Is there a setting on Atmosphere or OpenHab that I can change ?


sorry for the UP but is there anybody that may help me ?
Is it maybe a normal behavior send the websocket frame only to one client ?

I expect that the websocket connection is a broadcast info