Unity panel corruption on return from other user account

My wife occasionally shares my computer. After changing users, I've noticed that frequently the Unity panel becomes corrupted. I'm not sure if this is nvidia drivers related or unity related, but I'll open against unity.

I'm attaching a screen-cap of what I see when logging in after another user has been logged in. Sometimes it also affects content of windows as well.

https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1625498 looks to be a similar but possibly different issue.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: unity 7.4.0+16.04.20160906-0ubuntu1
Uname: Linux 4.8.0-040800rc8-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.03.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:03:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 367.44 Wed Aug 17 22:24:07 PDT 2016
 GCC version: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.2)
.tmp.unity_support_test.0:

ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Sat Oct 8 00:18:42 2016
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
GraphicsCard:
 NVIDIA Corporation Device [10de:1c02] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Device [196e:11d8]
InstallationDate: Installed on 2016-01-15 (266 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160115)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-040800rc8-generic root=UUID=029afe58-00c3-4872-9556-b3fd990c5cf1 ro quiet splash crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M scsi_mod.use_blk_mq=y dm_mod.use_blk_mq=y crashkernel=384M-:128M
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/06/2013
dmi.bios.vendor: Intel Corp.
dmi.bios.version: SIX7910J.86A.0594.2013.0806.2241
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: DX79SI
dmi.board.vendor: Intel Corporation
dmi.board.version: AAG28808-500
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrSIX7910J.86A.0594.2013.0806.2241:bd08/06/2013:svn:pn:pvr:rvnIntelCorporation:rnDX79SI:rvrAAG28808-500:cvn:ct3:cvr:
version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Thu Oct 6 01:25:28 2016
xserver.configfile: default
xserver.errors: open /dev/fb0: No such file or directory
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.18.4-0ubuntu0.1