Appointment status created from account does not match Outlook meeting status

Hi all,

I have an appointment created directly from the activities entity. When saved, the status is set to scheduled which blocks the time on the corresponding owner's Outlook (status in Outlook: Busy):

However, when I create and save an appointment from an account (timeline), the status on D365 is set to Open while the corresponding status on Outlook is Free:

Is there any particular reason for this difference? Is there a way to possibly solve this issue?

Thanks in advance!