I updated my one plus one two days ago to cyanogen OS 13.0 based on android 6.01.

Prior to this, if I press volume down button I can select mute (a circle with a slash), then select for how long to mute.

Now this feature has disappeared. Now when I press volume button I get a popup with volume control for ringer, alarm, music,...

Is there a way to get the temporary mute feature back? I usually use this feature to mute the phone when I'm sleeping.