Bad appointment scheduling with external calendars

[Markoise]

Steps to reproduce

1. Create an appointment with NC Calendar
2. Invite an external person to an appointment
3. Change appointment details

Expected behavior

If I change an appointment in the NC calendar, then the recipient should also receive the change in their calendar.

Actual behaviour

The recipient always receives an .ICS file with the appointment.
If the appointment is changed, he will receive the same .ICS file again without the change.

Calendar app version

4.4.4

CalDAV-clients used

Thunderbird 115, DAVx5, K9-Mail, emClient, GoogleCalendar, GoogleMail

Browser

Brave, Edge, Chrome, Firefox

Client operating system

Windows 11, Android 13

Server operating system

?

Web server

Other

Database engine version

None

PHP engine version

PHP 8.2

Nextcloud version

26.0.3

Updated from an older installed version or fresh install

None

List of activated apps

No response

Nextcloud configuration

No response

Web server error log

No response

Log file

No response

Browser log

No response

Additional info

No response