Add Appointments since last update

Hello,
Since the last update, when you want to add an appointment from the back-office, starting time begin at noon (even if you ask to use only openning times in settings). One of the service takes 1 hour but the duration of time slot is 1h30. I open at 10 am but now, if I want to add (in the back office) an appointment which takes 1h30, I cannot set the appointment at 10 am but at 10:30 am because the scheduler begins at 12 am. Before that version I could choose any hour I wanted to schedule an appointment.
I activated in the settings “only show business open hours” but it doesn”t work.
Is it possible to do something because I add by myself many appointments directly in the back office ? Would it be possible to have back again the version where I can choose any hour I want to schedule an appointment ?
Thank you so much.