Icon that doesn't exist is requested when no Wi-Fi is connected and Wireguard is enabled

When there is a Wireguard connection enabled and Wi-Fi is disconnected, an icon that does not exist is being requested.

On the attached screenshot, nm-applet can be seen in two places: on top it is the Tray Icon, it shows as an invalid icon. On the bottom it is the AppIndicator, it is the empty space on the left of the Bluetooth icon.

Even with this icon issues, I'm still able to interact with the nm-applet. I tried changing the theme to both GNOME and Adwaita (the screenshot shows Elementary Xfce Darker), and the bug still persists setting either icon theme.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: network-manager-gnome 1.24.0-1ubuntu3
ProcVersionSignature: Ubuntu 5.15.0-23.23-generic 5.15.27
Uname: Linux 5.15.0-23-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu80
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: XFCE
Date: Thu Mar 31 08:45:21 2022
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2017-06-13 (1751 days ago)
InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
IpRoute:
 default via 192.168.35.110 dev wlp2s0 proto dhcp metric 600
 10.72.201.0/24 dev lxdbr0 proto kernel scope link src 10.72.201.1 linkdown
 169.254.0.0/16 dev wlp2s0 scope link metric 1000
 172.16.0.0/24 dev wg0 scope link
 192.168.35.0/24 dev wlp2s0 proto kernel scope link src 192.168.35.153 metric 600
NetworkManager.conf:
 [main]
 plugins=ifupdown,keyfile

 [ifupdown]
 managed=false
SourcePackage: network-manager-applet
UpgradeStatus: Upgraded to jammy on 2019-12-22 (829 days ago)
modified.conffile..etc.cron.daily.apport: [deleted]
nmcli-nm:
 RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
 running 1.36.4 connected started full enabled enabled enabled enabled enabled