I noticed that upon receiving new emails in Thunderbird, the Ubuntu Dock icon shows a green unread notification dot - great. However, when I read the email, the notification dot never changes or goes away, it just always stays at the previous count.
Also I noticed that if you start Thunderbird with say 5 unread emails the dock icon does not show any notification dot count. So the dot only seems to be shown or update on receiving new emails but nothing else.
I could not see anything reported in Bugzilla and wondered if anyone else has noticed this problem? Not sure if a Thunderbird issue or a Ubuntu dock issue.
I have a new clean installation of Ubuntu 24.04 LTS and Snap install of Thunderbird (128.0esr). Can't see any config options regarding notification dots.