VLANs are not always listed in Settings - Network

Sometimes when I open Settings - Network I see my VLANs, sometimes I don't. I don't think changes made in nm-connection-editor are being properly recognized by Gnome.

I use nm-connection-editor to add and configure VLANs.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: network-manager-gnome 1.8.4-1ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 19 11:33:19 2017
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2017-10-19 (0 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
IpRoute:
 default via 192.168.50.253 dev vlan757 proto static metric 400
 169.254.0.0/16 dev vlan757 scope link metric 1000
 192.168.50.0/24 dev vlan757 proto kernel scope link src 192.168.50.222 metric 400
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
SourcePackage: network-manager-applet
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
 NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT AUTOCONNECT-PRIORITY READONLY DBUS-PATH ACTIVE DEVICE STATE ACTIVE-PATH SLAVE
 VLAN Camera 1a430a37-b4b3-461c-87bd-d60b547dd369 vlan 1508437983 Thu 19 Oct 2017 11:33:03 AM PDT yes 0 no /org/freedesktop/NetworkManager/Settings/4 yes vlan757 activated /org/freedesktop/NetworkManager/ActiveConnection/8 --
 Wired connection 1 23ca82a4-d9c5-3d59-ac84-56db17873201 802-3-ethernet 1508433170 Thu 19 Oct 2017 10:12:50 AM PDT no 4294966297 no /org/freedesktop/NetworkManager/Settings/1 no -- -- -- --
nmcli-nm:
 RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
 running 1.8.4 connected started full enabled enabled enabled enabled enabled