[bug] Volume Mixer mute/unmute icon missing (Gnome 48[.5])

[theoteno]

Describe the bug

Volume Mixer mute icon in quick settings menu is missing (Gnome 48[.5])

To Reproduce

Expected behavior

The Mute/Unmute button should had a Speaker icon with/without an X, or something similar

Screenshots

Kooha-2025-10-21-08-09-15.mp4

Environment

1. gnome-shell version: (ex) GNOME Shell 48.5
2. distro information:

(ex)
NAME="Bazzite"
PRETTY_NAME="Bazzite"
VERSION="42.20251019.0 (Silverblue)"
RELEASE_TYPE=stable
ID=bazzite
ID_LIKE="fedora"
BUILD_ID="Stable (F42.20251019)"

note: Bazzite updates are quite frequent (on the Steam Deck) and I update fairly often.
3. Extension version: 2.2.30 - stable