[Bug]: "Reset status" is being reverted to automatic status

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

After reset the automatic "In a meeting" status, the status is soon set back to "In a meeting" again.

Steps to reproduce

1. Customizer your users status, e.g. " ⛑️ My Important Status"
2. Have a calendar entry
3. At the time of the calendar entry, the status will be automatically changed to " 📆 In a meeting"
4. Open the status dialog and hit "Reset Status" button. Confirm with "Set Status Message"
5. See your status is reverted to you curstom status
6. Wait some.
7. Realize your status is switched back again to " 📆 In a meeting"

Expected behavior

The custom status stays (should it be overwritten in first place, when it was customized before?)

Installation method

None

Nextcloud Server version

29

Operating system

None

PHP engine version

None

Web server

None

Database engine version

None

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

No response

List of activated Apps

No response

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

No response