network-manager applet does not show wifi interface

Per the 10/3/2016 post for bug 1574347, I'm submitting my own bug for no wifi interface and the wrong icon on the network-manager applet on a Thinkpad T440p running 16.04 LTS. Even though I see the wifi disconnected icon and no wifi networks in the applet drop down, I am still connected to a network and can access the internet.

Wireless card information:
$ lspci -v
...
04:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83)
 Subsystem: Intel Corporation Dual Band Wireless-AC 7260
 Flags: bus master, fast devsel, latency 0, IRQ 35
 Memory at f1800000 (64-bit, non-prefetchable) [size=8K]
 Capabilities: <access denied>
 Kernel driver in use: iwlwifi
 Kernel modules: iwlwifi

$ nmcli dev
DEVICE TYPE STATE CONNECTION
wlp4s0 wifi connected a 1
enp0s25 ethernet unavailable --
lxdbr0 bridge unmanaged --
vethYCXI2H ethernet unmanaged --
lo loopback unmanaged --

$ ip route
default via 192.168.208.1 dev wlp4s0 proto static metric 600
10.1.8.107 via 192.168.208.1 dev wlp4s0 proto dhcp metric 600
192.168.208.0/20 dev wlp4s0 proto kernel scope link src 192.168.219.126 metric 600

nmtui does not list any active connections.

network-manager 1.2.2-0ubuntu0.16.04.3 installed.

It seems to run like this for a while, including several wake/sleep cycles but then eventually won't connect at all and then I end up restarting.

Please let me know if any other information would be helpful. Thank you.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: network-manager-gnome 1.2.0-0ubuntu0.16.04.4
ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21
Uname: Linux 4.4.0-45-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Nov 7 12:48:28 2016
ExecutablePath: /usr/bin/nm-applet
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2016-09-12 (56 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
IpRoute:
 default via 192.168.208.1 dev wlp4s0 proto static metric 600
 10.0.1.0/24 dev lxdbr0 proto kernel scope link src 10.0.1.1
 10.1.8.107 via 192.168.208.1 dev wlp4s0 proto dhcp metric 600
 169.254.0.0/16 dev lxdbr0 scope link metric 1000
 192.168.208.0/20 dev wlp4s0 proto kernel scope link src 192.168.219.126 metric 600
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager-applet
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-nm:
 RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
 running 1.2.2 connected started full enabled enabled enabled enabled enabled