Shots with no club selected : Driver by default

If while selecting a club after a shot I push the Back button (no club selecred), after syncing with Garmin Golf this shot is indicated as made with a Driver. By the other words, the Drrver is tnow he default club for the shots if other club is not explicitly indicated.

This a new issue for me : previously if no club was selected after a shot, this shot remained unattributed to any club in the app. I gess something has changed on my settings or in the software. 

How is it possible to remedy this ?