Mail: Mail 0.15.1 in Nextcloud 16.0.1 shows some mails several times

[yafp]

Expected behavior

Mail should show each mail once

Actual behavior

Some mails are displayed several times.

• Currently it affects 2 mails in the inbox of 1 mail-account.
• Sometimes i see each of those 2 mails 4 times, sometimes only each twice.
• This behaviour does not affects all mails
• It affects the single inbox and the universal inbox

Is that a known issue as i am using Mail 0.15.1 on Nextcloud 16.0.1?

Mail app

Mail app version: 0.15.1

Mailserver or service: private hosted

Server configuration

Nextcloud Version: 16.0.1

Client configuration

Browser: Firefox 66.0.5

Operating system: Ubuntu

[ChristophWurst]

Is that a known issue as i am using Mail 0.15.1 on Nextcloud 16.0.1?

Not yet. But the unified inbox is a tricky feature and it wouldn't surprise me if I made a mistake in the new implementation :)

Please keep an eye on the issue. Would be great to detect the pattern that triggers this issue.

[yafp]

The only pattern (not sure if it is a pattern - or just randomness) i realize so far is that it affects 2 mails which are in direct order and both from the same sender.

I'll update here if i have more informations.

[yafp]

I've realized the same effect again .... and the pattern seems to be the same:

• Requirements: Inbox has 2 mails in direct order from the same sender with the same subject
• May result in:
  
  
  
  • the mail gets displayed several times (looks like some kind of loop with random length)
  
  
  • after the random amount of repeated displayed mails - older mails are displayed as well (so its not endless)
  
  

see attached screenshot:

[ChristophWurst]

* Requirements: Inbox has 2 mails in direct order from the same sender with the same subject

Thanks for the feedback. We never compare messages by sender or subject but always by their UID, so this is a bit surprising. I'll think about it.

[Snaptags]

I have the same problem, but in my case only the account's inbox is affected. I don't get the duplicated entries in the universal inbox…

[ChristophWurst]

Good point. I have to test that case. I use the unified inbox 95% of the time.

[stale[bot]]

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