Hi!
Not sure if this is known, but when I click on an email notification, the notification simply disappears without any app being launched on Cinnamon (Linux Mint 22.1).
I tried both leaving Thunderbird as the default email app, or manually editing my ~/.config/mimeapps.list to point to a different .desktop app (a web application in my case), but nothing happens in either case.
Is the notification click action not supported in Cinnamon?