Missing vhost NIC option in VM configuration GUI

vhost network interface suddenly gone missing in edit VM GUI. This bug reproducing even on VMs with vhost0 still active (and working!) in XML view:

Unraid version: 7.3.1

/boot/config/network.cfg

# Generated settings:
IFNAME[0]="eth0"
DHCP_KEEPRESOLV="no"
DHCP6_KEEPRESOLV="no"
PROTOCOL[0]="ipv4"
USE_DHCP[0]="yes"
USE_DHCP6[0]="yes"
IFNAME[1]="eth1"
DESCRIPTION[1]="Mellanox 10G"
PROTOCOL[1]="ipv4"
USE_DHCP[1]="yes"
SYSNICS="2"

/boot/config/domain.cfg

SERVICE="enable"
IMAGE_FILE="/mnt/user/system/libvirt/libvirt.img"
IMAGE_SIZE="1"
DEBUG="no"
DOMAINDIR="/mnt/user/domains/"
MEDIADIR="/mnt/user/isos/"
VIRTIOISO="/mnt/user/isos/virtio-win-0.1.240-1.iso"
BRNAME="eth0"
VMSTORAGEMODE="auto"
TIMEOUT="60"
HOSTSHUTDOWN="shutdown"
CONSOLE="web"
DISABLE="no"
RDPOPT="no"
USAGE="N"
USAGETIMER="3"

Something is definitely messed up - network.cfg reports Mellanox as interface with index 1, but in GUI its definitely eth0:

eth1 is inactive (1 Gbe NIC)

So, any ideas how do I bring back vhost0 to my VM GUI? editing XML works too, but not ideal.