Moving mail triggers automatic marking others as read in Smart Mailbox

That certainly does not sound good.

I assume you have some kind of “mark automatically as read” setting in the Viewer preferences pane?

What fails would then somehow be related to the “stickiness” of messages in the Unread mailbox, that is, messages staying in the mailbox even though they are read. I can imagine how this could go wrong in some cases... If it's not sticky then it's removed from the mailbox and a new message is selected, triggering it to also be removed, etc.

You could create a mailbox based on the problematic mailbox, but which only contains emails from, e.g., today. That would make testing less risky.

(There's a new beta available today, but I don't think it's better. If anything, it's probably worse since it makes such a mailbox a bit less sticky.)

I've updated yesterday to r6131 and while the problem improved it still triggers the "read" status on the following message, i.e. (left side initial state; right side sequence of events):

top message, unread; move to other mailbox and vanishes from unread smart folder, OK
2nd message, unread; gets marked read and vanishes from unread smart folder NOT GOOD
3rd message, unread; now top message, marked, still marked unread

This is way better than it used to be. A possible question I have is: based on the changes you made the weeks before this was reported, do you have an idea how the initial change of behaviour came into the code?

Might this depend on some of my settings? I saw the mention in the changelog.

I am a lot more happy to test things now. Let me know if you need anything.

Neither seem to exist:

[176:~] bz% defaults read com.freron.MailMate MmStickyMessagesEnabled 2018-11-23 12:02:25.969 defaults[35886:11112613]
The domain/default pair of (/Users/bz/Library/Preferences/com.freron.MailMate, MmStickyMessagesEnabled) does not exist
[176:~] bz% defaults read com.freron.MailMate MmMessagesWebViewMarksUnreadAutomatically 2018-11-23 12:02:33.487 defaults[35888:11112744]
The domain/default pair of (/Users/bz/Library/Preferences/com.freron.MailMate, MmMessagesWebViewMarksUnreadAutomatically) does not exist
[176:~] bz% defaults read com.freron.MailMate MmMessagesWebViewSecondsToMarkUnread 2018-11-23 12:02:44.057 defaults[35889:11112827]
The domain/default pair of (/Users/bz/Library/Preferences/com.freron.MailMate, MmMessagesWebViewSecondsToMarkUnread) does not exist
[176:~] bz% defaults read com.freron.MailMate MmMessagesWebViewMarksUnreadOnlyIfSingleMessage 2018-11-23 12:02:50.284 defaults[35890:11112880]
The domain/default pair of (/Users/bz/Library/Preferences/com.freron.MailMate, MmMessagesWebViewMarksUnreadOnlyIfSingleMessage) does not exist

Ok, you have default settings (sticky mailbox and messages marked read immediately after being selected), but I still cannot reproduce it. What is your “View ▸ Layout” and could you send me the following file and let me know which mailbox you are using when this happens:

~/Library/Application Support/MailMate/Mailboxes.plist

To mm-info@freron.com?

That's fine or use “Help ▸ Send Feedback”. Everything ends up on my computer :)