Wrong notification about a "new" email repeats forever

[pabzm]

Steps to reproduce

I don't know how to reproduce this.

Expected behavior

The mail app should notify me about newly incoming emails once per email.

Actual behavior

Having the Mail app open in the browser, after a short while I see a notification about an email, as if that email were new. But the email is not new, it's some days old and has been marked read since a while. The notification repeatedly keeps coming, always about the same email. I can only stop it by closing the browser tab.

In the past I had this problem with a notification about a different email, so I think it's not about the actual email's content.

Mail app version

4.2.0 rcX

Nextcloud version

31 rcX

Mailserver or service

nextcloud.com

Operating system

macos

PHP engine version

None

Nextcloud memory caching

No response

Web server

None

Database

None

Additional info

No response

[ChristophWurst]

Thank you for the report.

The symptoms sound like the ones of #10176

[pabzm]

You're right, it's exactly that phenomenon.

The notification was about an email that I had received twice. Since I deleted one of them the notifications had stopped. As soon as I pulled it out of the Trash-folder, the notifications came back.

The changes from that PR look like they've been released, though. And I'm using v4.2.0 RCx, and still having the problem.

[ChristophWurst]

The previous fix assumed that the two messages of the same thread at least have a distinct message id. Is that the case for you or are they identical?

[pabzm]

They are identical. The whole message is almost identical, except for one Received line's id attribute. I don't know how this came to be, but both messages are visible in multiple email programs, so they apparently are not a hallucination.

[pabzm]

Regarding problems with emails with identical Message-Ids there's also #10682