How should taskbar icon and badge work

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At the moment the taskbar icon (i'm talking about windows version) is completely unreliable.

this is the actual behaviour and how it should work on my opinion.

• atm if you close the app with the X it effectively closes it and the taskbar icon disappears-> it should just minimize the app in the taskbar, in this way the icon flashing and badge icon keeps working and notify the incoming messages. Windows toast message is completely useless when you are not in front of the screen and it disappear after few seconds, and many times you miss incoming messages.
• atm if you are in a talk chat, with talk desktop windows open, and a message is incoming in this chat, you get no badge and no flashing icon (even if the windows is in background and this is the worse part) -> icon flash and badge should always been shown when the windows is background and not focused. in my opinion it should ALWAYS flash and show badge until i effectively read the message.

The issue names no files, tests, or entry points. Start by locating the Windows taskbar and window-close handling, then trace the badge and incoming-message notification behavior; done means closing with X keeps the app available in the taskbar and unread incoming messages reliably flash and show a badge until read.