For me dislike is not the same as hate, it produces different feelings.

About System Tray, I mean GNOME refused to implement the standards and created their own cooler system , maybe they changed their minds , I see you have or had to use an extension https://github.com/Rickycezar/gnome-shell-slack-integration.

Btw I mean not only the message popup but a way to just glance at the Tray area and see you missed a notification or that you have unread emails in Thunderbird.

If Sack,Thunderibird,Discord,Skype work by default with no extra extension or extra compatibility layer in GNOME then great I did not know that GNOME developers lost this battle with the users.

I'm sorry, this was not a very productive reply and I do regret the tone in which I answered. Mea culpa.

> For me dislike is not the same as hate, it produces different feelings.

Fair enough.

> If Sack,Thunderibird,Discord,Skype work by default with no extra extension or extra compatibility layer in GNOME then great

I get notifications for Thunderbird, Firefox, Teams and other applications. I don't know if any of them have extra code to supply notifications for Gnome, but I don't use extensions or compatibility plugins.

> I did not know that GNOME developers lost this battle with the users.

I'm very happy with the way notifications work in Gnome. The system tray was a burning heap of trash and every applications was trying to dump their icon in it to have extra screen space. I'm not sorry it's gone.

You did not answer if there is a way for you to know that you have unread messages, with a Tray I can just look and see if I have unread stuff on Slack, or an unread email or maybe updates pending. And yes I can remove the System Tray if I don't like it for some reason or I can hide some of the apps in it. Long time ago when I was working on cross platform desktop apps the toolkit Qt,Net or Adobe AIR would handle the Tray for me, and the menus , I did not had to write specific code for Windows,Mac and Linux. What GNOME devs did is ask app develoeprs to screw the standards and write GNOME specific code, even GTK devs got rude answers from GNOME devs, this days GTK is GNOME only toolkit from GNOME POV.