Extreme battery loss on Model 3. Contacted service and told this is normal (more info below)

Has anyone had this extreme battery loss happen before? Almost 20% loss in 48 hours, has happened both in an underground garage and outside. Only started happening since the last update. I noticed that Cabin overheat protection was on on the first day and made sure to turn it off, but no idea what is triggering the vehicle standby. Sentry mode is turned off and no third party apps installed . I booked a service to get this checked out but tesla service assured me this is ‘normal’ multiple times without giving me an explanation and closed my service appointment.

Has anyone had this extreme battery loss happen before? Almost 20% loss in 48 hours, has happened both in an underground garage and outside. Only started happening since the last update. I noticed that Cabin overheat protection was on on the first day and made sure to turn it off, but no idea what is triggering the vehicle standby. Sentry mode is turned off and no third party apps installed . I booked a service to get this checked out but tesla service assured me this is ‘normal’ multiple times without giving me an explanation and closed my service appointment.