Empty scopes Unity8 and graphical artifact

[vasilisc]

1) Remove all files in /home/testuser/
2) Login testuser in Unity8 sessions
3) See empty scopes Unity8 and graphical artifact

Please, see image
http://storage1.static.itmages.ru/i/15/1113/h_1447409681_4384919_c8f47bda0b.jpg
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Wed, 18 Nov 2015 11:19:20 +0300
[Ubuntu]
Description: Ubuntu Xenial Xerus (development branch)
Release: 16.04

[Kernel linux]
Linux vasilisc 4.2.0-19-generic #23-Ubuntu SMP Wed Nov 11 11:39:30 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

[Kernel command line]
BOOT_IMAGE=/vmlinuz-4.2.0-19-generic root=UUID=6d8ea6da-b2d9-406c-a812-2b21a2925731 ro rootflags=subvol=@ elevator=cfq

[VGA]
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK107 [GeForce GT 640] [10de:0fc1] (rev a1) (prog-if 00 [VGA controller])
 Subsystem: ASUSTeK Computer Inc. Device [1043:83f3]
 Flags: bus master, fast devsel, latency 0, IRQ 28
 Memory at f6000000 (32-bit, non-prefetchable) [size=16M]
 Memory at e0000000 (64-bit, prefetchable) [size=256M]
 Memory at f0000000 (64-bit, prefetchable) [size=32M]
 I/O ports at e000 [size=128]
 Expansion ROM at f7000000 [disabled] [size=512K]
 Capabilities: <access denied>
 Kernel driver in use: nouveau

[Versions]
libc6:amd64 2.21-0ubuntu4 amd64
libc6:i386 2.21-0ubuntu4 i386
libc6-dbg:amd64 2.21-0ubuntu4 amd64
libc6-dev:amd64 2.21-0ubuntu4 amd64
libcompfaceg1 1:1.5.2-5 amd64
xserver-xorg-video-nouveau:
  Installed: 1:1.0.11-1ubuntu3
  Candidate: 1:1.0.11-1ubuntu3
  Version table:
 *** 1:1.0.11-1ubuntu3 0
        500 http://archive.ubuntu.com/ubuntu/ xenial/main amd64 Packages
        100 /var/lib/dpkg/status
unity8:
  Installed: 8.11+16.04.20151104-0ubuntu1
  Candidate: 8.11+16.04.20151104-0ubuntu1
  Version table:
 *** 8.11+16.04.20151104-0ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ xenial/universe amd64 Packages
        100 /var/lib/dpkg/status
unity8-desktop-session-mir:
  Installed: 1.0.12+15.10.20150609-0ubuntu1
  Candidate: 1.0.12+15.10.20150609-0ubuntu1
  Version table:
 *** 1.0.12+15.10.20150609-0ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ xenial/universe amd64 Packages
        100 /var/lib/dpkg/status

[Stephen M. Webb (bregma)]

Very interesting pathological condition. Removing all files in a user's home directory is of course going to cause odd and otherwise inexplicable problems, but should be handled gracefully. I'm marking this as a low priority curiosity to investigate, since it may be symptomatic of some other underlying pathology of a more sinister nature.