new X1 dvr box not recording current channel when TV is off

My previous x1 dvr box recorded the current channel while the tv is off for the prior 60 minutes.   When I used to turn the tv back on, I could go back 60 minutes and watch the prior 60 minutes.      My new X1 DVR box does NOT record the current channel while the tv is off.  It records scheduled recordings just fine    Did Xfinity get rid of this capability on newer X1 DVR boxes?   Is there a setting I need to set?  Thanks