When you go to record an activity, have you clicked on the little “gear” icon to see if live segments are toggled on?  If the app and/or phone were updated, it could have changed that setting and it may just need to be turned on again.

There’s a similar report by another user here from yesterday, maybe it’s related..? 

I’m not seeing a “little gear icon”

Are you using the phone app?  When you click on the record button in the bottom center, it should pull up the activity recording screen.  On the top right, you should see the little “gear” settings icon.