App icon in top panel not updated when switching windows with Alt+Tab

[somepaulo]

Describe the bug
The app icon in the top panel doesn't get updated when switching windows with Alt+Tab, but updates fine when switching windows via the overview. The app/window title changes fine either way.

To Reproduce
Steps to reproduce the behavior:

1. Make sure Unite is set to display the current app icon in the left box of the top panel.
2. Open two different apps.
3. Switch between them using Alt/Super + Tab.
4. See wrong behaviour.
5. Switch between the apps graphically by clicking on them or through the overview.
6. See correct behaviour.

Expected behavior
The app icon should update irrespective of the method used to change window focus.

Screenshots
Screencast from 2024-03-30 19-31-51.webm

Environment (please complete the following information):

• OS: Arch
• GNOME Shell version: 46
• Unite version: 78

Logs
Nothing there.

Additional context
On Wayland. Haven't tried X11.