[KDE Plasma] Attention tray icon never displays and notifications do not appear in history

[mirenradia]

Description My tray icon never changes to the "attention" one and, whilst notifications do appear when messages come in, these do not appear in the notification history. I have combined these into one issue since I think these may be related. I also wonder if the lack of notifications in the history is related to KDE Plasma not keeping notifications in the history if the desktop-entry is not configured correctly (see here).

To Reproduce

1. Receive a message
2. Check tray icon/notification history

Expected behavior The tray icon should change to the attention one and the notification should appear in the history.

Environment

• Distro: Ubuntu 20.04
• Package: debian
• Desktop Environment or Window Manager: KDE Plasma 5.18.8

[xeco23]

Yeah, if DE doesn't store notifications, the attention icon goes back to normal after the notification is destroyed.

I see that it KDE Plasma checks desktop-entry hint to keep the notifications in history which we might need to implement i.e. as mentioned here

[Sadi58]

No notification message or icon here: Debian Bookworm, KDE Plasma 5.26.3