Outlook event respone showing as "none" on own event via Graph API

We have an application that uses the Graph API to get events from Outlook calendars.

When person A creates an event, not necessarily a Teams-Meeting, in their calendar it their response status will be shown as "organizer".

Now this usually also works when peson B creates an event in person A's calendar using editor access that was granted to them by person A. However in one specific case this does not seem to work correctly, instead the response status is shown as "none".

Request: https://graph.microsoft.com/v1.0/me/calendarView?startDateTime=2026-2-19T00:00:00&endDateTime=2026-2-22T23:59:59

The response includes this:

For all other events created by person B in person A's calender the rseponse status is correctly shown as "organizer".