Accept and do not send response does not work

Outlook 365 Calendar should track responses to meeting invites to let you know what the responses are. This is really important when understanding who can make the meeting. Its often considered courteous not to hit 'accept and send reply' to protect someone's inbox and because 'accept and don't send reply' would still be tracked in the tracker so the meeting organiser can see your response there. However, this is not working so if you hit 'accept and don't send reply' the response is not tracked. This causes confusion as people say they've accepted because they've hit 'accept, and don't send reply' expecting their response to be logged in the tracker but it isn't. The organiser can't see a response in the tracker, so has no idea if the person can attend so asks them, at which point the invitee says 'yes, I accepted' and often looks a bit confused / frustrated, as does the organiser. So the organiser has to manually ask for responses and then log who's coming to meetings. This is counter to the efficiencies expected from this software. Please advise when this bug will be corrected.

Thanks