This is a similar situation we have with Flatpak when the desktop entry the application thinks it owns is actually different.
In Snap this environment variable is passed to the process. When no service was found, try reading it.
CHANGELOG: Improved notification identification for Snap applications
Differential Revision: https://phabricator.kde.org/D21881
* Make dataengines work fully standalone
* Fix panel icon sizing
There's still an issue with the popup size when resizing the vertical panel smaller so it collapses
* Implement keyboard navigation for the list with focus hacks...
Delete key closes notifications or groups, Arrow left/right expand/collapse groups, Enter invokes default action, if any
* Fix DND times that are supposed to be hidden showing
ModelContextMenu doesn't respect "visible" property
* Move "Notifications" header to ListView header so it scrolls away and leaves more room for the notifications in systray popup
* Fix finished jobs in history showing as failed when app is closed
* Don't remember apps that spawned jobs, only for notifications
* Use CriticalNotification window type (patches pending)
* Ship some more default rules in plasmanotifyrc
* Improved do not disturb menu (add "for 4 hours" and "until disabled")
* Expand unread notifications by default, overall improved expansion/collapse handling
* Show unread count in panel and reset when plasmoid is closed again
* Move notification sanitizer and its test from dataengine to lib
* Load pixmaps into model also for files and limit their physical size
* Enforce maximum limit for notifications (1000...)
Kai Uwe Broulik