No preference shows booked appointments even though there is 0 appointments

I have two service providers doing the same service, same working hours so for my service i have set the Capacity to 2. Right now i have 0 appointments in my GCal and in actual wordpress site however when the page loads and i have set my service provider as no preference it shows all my morning and afternoon appointments are booked. When I pick an specific service provider then all the appointments load correctly and are empty. Any idea why this is happening?