Attendee list shows different people in “view” vs “edit” and hides one attendee

Steps to reproduce

For a calendar event with 4 attendees, the attendee list is incorrect and inconsistent between the different dialogs:

1. Create an event with > than 3 attendees, only 3 attendees are shown (Meeting_Enter.png).
   3 attendees listed are: WR, DN and TG

2. View the event. Only shows 3 attendees. The text “Attendees 3 invited, 0 confirmed” is wrong, because 4 people were invited. (Meeting_View.png)
   3 attendees listed are: WR, JA and TG

3. Editing the event, all 4 attendees are shown (Meeting_Edit.png)
   4 attendees listed are: WR, JA, TG and DN

Expected behavior

1. The attendee section shows a complete list of all attendees invited in all states: create, view, and edit.
2. The text “Attendees X invited, Y confirmed” uses the real number of attendees lines in the event.
3. No attendee disappears or gets “swapped”.

Actual behavior

For a calendar event with 4 attendees, the attendee list is incorrect and inconsistent between the different dialogs.
It shows in some views only 3 attendees when actually 4 stattdessen got invited.

Mail app version

5.6.2

Nextcloud version

Nextcloud Hub 25 Autumn (32.0.2)

Mailserver or service

Own mail server. Postfix, Dovecot, Rspamd

Operating system

Rocky Linux 9

PHP engine version

PHP 8.3

Nextcloud memory caching

512 MB

Web server

Other

Database

MariaDB

Additional info

Web Server is caddy

No source files or tests are named. Start by reproducing an event with four attendees and compare the create, view, and edit dialogs, then trace how each dialog receives and renders the attendee list and count. Done means all four attendees appear consistently and the invited count matches the event.