1822537 - Can't read the last unread message of a folder in `Unread Folders` view mode as it gets marked read automatically and containing folder disappears from view (with default setting of `Automatically mark messages read`)

Status: RESOLVED FIXED

(Thunderbird :: Folder and Message Lists, defect, P2)

Description

[thesimarchitect]

Steps to reproduce:

Clicked on an unread message when seeing the unread folders.

Actual results:

It flashes and closes because the message is marked as read by the system when displayed on the preview pane.

Expected results:

The message should be displayed on the preview pane and I should be able to read it even if the system flags it as read, like with previous versions of Thunderbird.

Comment 1

[Magnus Melin [:mkmelin]]

What setting do you have for mark as read?

Comment 2

[Wayne Mery (:wsmwk)]

More information is needed

Comment 3

[Thomas D. (:thomas8)]

Ouch! This makes Unread Folders view mode no-op for each last unread message in a folder - with default setting of Automatically mark messages read > Immediately on display.

• Clicking the message marks it read in a split second,
• then there are no unread messages any more in the containing folder,
• then the view automatically refreshes instantly and removes the containing folder with the message - unfortunately without giving the user a chance to read the message.

This pretty much renders the entire Unread Folders view useless, should fix this asap.
In 102, containing folder keeps hanging round forever until hiding/re-showing Unread Folders view; also not useful, but better for actually reading messages.

STR

1. Ensure default setting ≡ > Settings > General > Reading and Display > [x] Automatically mark messages read > (o) Immediately on display.
2. To avoid artifacts, create a new custom folder test-unread under Local Folders, and populate with copies of some random messages.
3. From All Folders view (View > Folders > All), mark 3 messages in test-unread folder as unread (press M and ensure messages show as unread).
4. Enable Unread Folders view (View > Folders > Unread)
5. From Unread Folders view section in Folder Pane [important!], select test-unread folder, click on each of the 3 unread messages one by one.

Actual result

• Immediately after clicking on last unread messsage in test-unread folder under Unread Folders view, the message gets marked read, and the entire test-unread folder disappears without giving the user a chance to read the message - which makes Unread Folders pretty much no-op.

Expected result

• Allow user to read the last unread message in test-unread folder under Unread Folders view even after it automatically (or manually) gets marked read.
• Keep showing the folder test-unread which previously had unread messages until the user selects another folder, then hide test-unread folder from Unread Folders view.
• Fwiw, 102 won't hide the folder until you show and hide the entire Unread Folders view, but imo that's a bit too long as it also kinda makes Unread Folders no-op.

Comment 4

[Geoff Lankow (:darktrojan)]

Attachment: Bug 1822537 - Keep folders in the Unread Folders list forever unless they are deleted. r=aleca

In a later patch, I'll figure out when and how to prune folders from the list, but for now let's just keep them forever.

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/comm-central/rev/1e926df5b40f
Keep folders in the Unread Folders list forever unless they are deleted. r=aleca

Comment 6

[Wayne Mery (:wsmwk)]

Comment on attachment 9325884 [details]
Bug 1822537 - Keep folders in the Unread Folders list forever unless they are deleted. r=aleca

[Triage Comment]
Approved for beta

Comment 7

[Daniel Darnell [:dandarnell]]

Thunderbird 112.0b6:
https://hg.mozilla.org/releases/comm-beta/rev/aacb146e821d