As of latest update, Zwift is not disconnecting bluetooth connection with Tacx Neo when Zwift app is closed once connection is initially made. Erg mode is not working when Zwift app is opened for the 2nd and subsequent times, message on dashboard is " Erg mode is temporarily disconnected". Apple TV and Ipad were tested and both do not disconnect bluetooth unless Apple TV is restarted or Ipad bluetooth is shut off and turned on again. When doing a workout in Erg mode dashboard shows all the appropriate wattages for the sets however resistance does not change and message shows " Erg mode is temporarily disconnected". Tacx Neo has latest update.
Definitely an issue with most recent update; several others threads noting this with Neo this week.