nextcloud / nextcloud/calendar

Updating a event sends "canceled" notification to participants

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0. to triage bug feature: iMip
Dominant language
JavaScript
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Description

Steps to reproduce
  1. Create a calendar invitation, in my case I used the "appointment booking"-feature. But with regular invitation you should see the same effect
  2. As the owner of the event, edit it (e.g. add a talk room to the location)
  3. Check the mail account from the invited person
Expected behavior

The invited person gets an update of the appointment

Actual behaviour

The actual behavior depends on how I edit the event:

edit it with the Nextcloud calendar app

If I edit it with the Nextcloud calendar app in the browser no mail is send at all. So the participants never get notified about the changes

Edit it with Thunderbird 102.4.1

The result depends now on the Thunderbird calendar setting (right click on the calendar -> properties)

My default:

grafik

By default I tell Thunderbird that it should send invitation mails client-side because this way the recipient get a more "standard" invitation but not our html mail.

Surprisingly in this case a "cancel" mail from the Nextcloud server is triggered:

grafik

If I change the settings above and uncheck "prefer client-side email scheduling". No mail at all is send. Same as when I edit the event with the calendar app in the browser.

Calendar app version

4.1.0

CalDAV-clients used

Thunderbird 102.4.1

Browser

No response

Client operating system

Fedora

Server operating system

cloud.nextcloud.com

Web server

No response

Database engine version

No response

PHP engine version

No response

Nextcloud version

25.0.1

Updated from an older installed version or fresh install

No response

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

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the issue using the Nextcloud Calendar app and Thunderbird 102.4.1, comparing both Thunderbird email-scheduling settings. Verify the behavior for an owner editing an invited event: recipients should receive an update notification, not a cancellation or no message.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
45/100

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