The availability of participants, resources and rooms incorrectly indicates the employment of the event participants.

Steps to reproduce

1. I'm opening my calendar. I immediately want to write that I do not keep my own calendar, and my time frame is 95% free.
2. I select some time on the calendar with the mouse.
3. I press the "More details" button
4. I go to the "Participants" tab and add one colleague.
5. I press the "Find a time" button.

Expected behavior

It was expected that this setting would display my download correctly, relative to the data that is filled in the calendar for me and my colleague.

Actual behaviour

I see the following information about myself, I have been busy all day, it is displayed in red. Although this is not the case.

Calendar app version

4.7.16

CalDAV-clients used

No response

Browser

Firefox, Yandex

Client operating system

Windows

Server operating system

Linux

Web server

Nginx

Database engine version

MySQL

PHP engine version

Other

Nextcloud version

28.0.11 - 28.0.11.1

Updated from an older installed version or fresh install

None

List of activated apps

Nextcloud configuration

Web server error log

Log file

Browser log

Additional info

No response

Start in the Calendar app by reproducing the flow through the Participants tab and the “Find a time” button with the reported version and browser details. Compare the displayed availability for the reporter and colleague with their calendar data; done means the availability no longer marks the reporter busy all day when the calendar is mostly free.