Newbie Q: Random Save or Discard?

I’m a new user - I run Zwift on a Mac with MacOS Sierra.

Twice in the last week, the “Save or Discard” screen has popped up in the middle of a ride. This is especially annoying because (as far as I can see) there is no “cancel” option - I have no choice but to quit my ride.

What is causing this? 

One thought - I use the Zwift MobileLink app on an iPhone that is mounted on my bars and during a ride, it gets covered in sweat. A long shot but could this be causing the problem?

Thanks.

Chances are your iPhone screen is interpreting that sweat as a finger press and in this case it’s on the stop button in the app.

Could be worth either covering the phone with your towel or keeping it away from sweat for a ride and see if the problem still occurs.