I have received an update to Supernova interface and it looks nice, but message list has lost all the functionality.

I used buttons in the view to mark messages as read/unread and spam at least once an hour and now they are all gone, can't do anything without selecting a message and using hotkey or searching for necessary action in context menu.

All those inconveniences cost me space too, every email now uses two lines instead of one (my Thunderbird window is over 6000px wide, I'd rather use its horizontal space than vertical).

Please consider introducing those features back somehow under new design.

The "buttons" work, but only for the selected message.

I don't see them in the list, there is only "star" button and it is always visible anyway.
If you mean those that are in email preview, then when using just a mouse that is quite a bit of travel and precision required to do what was previous a few pixels away.

They are available. Maybe you need to click the customize button in the thread pane header to add them?

I was following a ticket that this bug is supposedly a duplicate of, I still don't have any buttons in the list, just updates Thunderbird to 112.0b6.
What am I missing? My list doesn't have columns and there is only "Star" button visible on each line.

Nazar, thank you for following up.

Alex has indicated in the beta forum this will be done.

(A more accurate description in the original report would have avoided confusion.)

Alex, will the implimentation require strings?

No it doesn't require strings.
We should land this option on daily later next week (use table layout in vertical view)

Grabbing this and adding an option in the menubar and app menu as a start, then we will expose this in context in a follow up.

Pushed by john@thunderbird.net:
https://hg.mozilla.org/comm-central/rev/a008abcd3d9d
Implement a Thread pane header with display and filtering options. r=darktrojan

Comment on attachment 9331979 [details]
Bug 1823019 - Implement a Thread pane header with display and filtering options. r=darktrojan

[Triage Comment]
Approved for beta

Thunderbird 114.0b1:
https://hg.mozilla.org/releases/comm-beta/rev/0a8c9edd4719

Pushed by alessandro@thunderbird.net:
https://hg.mozilla.org/comm-central/rev/dbf8a686ade2
Implement a Thread pane header with display and filtering options. r=darktrojan

(In reply to Rob Lemley [:rjl] from comment #15)

Thunderbird 114.0b1:
https://hg.mozilla.org/releases/comm-beta/rev/0a8c9edd4719

Needs backout and new patch uplifted for next beta.

Thunderbird 114.0b2:
https://hg.mozilla.org/releases/comm-beta/rev/7af6175d0402

Thunderbird 114.0b2:
https://hg.mozilla.org/releases/comm-beta/rev/4354769f541c