Using GNOME 3.29 on Ubuntu 18.10 it appears this bug is fixed.

I'm not sure about Ubuntu 18.04 but do recommend you upgrade to 18.04
ASAP anyway since it is our latest long term release that will be
getting the most GNOME fixes.

** Changed in: colord (Ubuntu)
       Status: Incomplete => New

** Changed in: gnome-shell (Ubuntu)
       Status: Incomplete => New

** Changed in: lightdm (Ubuntu)
       Status: Incomplete => New

** Changed in: mutter (Ubuntu)
       Status: Incomplete => New

** Changed in: colord (Ubuntu)
       Status: New => Fix Released

** Changed in: gnome-shell (Ubuntu)
       Status: New => Fix Released

** Changed in: lightdm (Ubuntu)
       Status: New => Fix Released

** Changed in: mutter (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1789822

Title:
  Colour profile deactivated after interrupted screen fade-out

Status in colord package in Ubuntu:
  Fix Released
Status in gnome-shell package in Ubuntu:
  Fix Released
Status in lightdm package in Ubuntu:
  Fix Released
Status in mutter package in Ubuntu:
  Fix Released

Bug description:
  When power management blanks the screen out and the process is
  interrupted, the colour profile is deactivated and never set back. The
  profile has to be re-applied in 'Color' settings manually.

  Expected behaviour:
  Colour profile remains active during and after a screen fade-out.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: xorg 1:7.7+13ubuntu3.1
  ProcVersionSignature: Ubuntu 4.15.0-32.35~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-32-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: 
'/proc/driver/nvidia/gpus/0000:01:00.0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  396.54  Tue Aug 14 19:02:34 
PDT 2018
   GCC version:  gcc version 7.3.0 (Ubuntu 7.3.0-21ubuntu1~16.04)
  .tmp.unity_support_test.0:
   
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME
  Date: Thu Aug 30 08:03:53 2018
  DistUpgraded: Fresh install
  DistroCodename: xenial
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   NVIDIA Corporation GK107GLM [Quadro K2000M] [10de:0ffb] (rev a1) (prog-if 00 
[VGA controller])
     Subsystem: Lenovo GK107GLM [Quadro K2000M] [17aa:21f6]
  MachineType: LENOVO 244759G
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-32-generic 
root=UUID=cf56f770-2527-47cc-bf3b-a1815c6c2a09 ro quiet splash acpi_osi=Linux 
acpi_backlight=none vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/24/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G5ETA6WW (2.66 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 244759G
  dmi.board.vendor: LENOVO
  dmi.board.version: Win8 Pro DPK TPG
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: 
dmi:bvnLENOVO:bvrG5ETA6WW(2.66):bd08/24/2016:svnLENOVO:pn244759G:pvrThinkPadW530:rvnLENOVO:rn244759G:rvrWin8ProDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.family: ThinkPad W530
  dmi.product.name: 244759G
  dmi.product.version: ThinkPad W530
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12.3+16.04.20180221-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.91-2~16.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~16.04.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~16.04.1
  version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
  version.xserver-xorg-core: xserver-xorg-core N/A
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
  version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
  xserver.bootTime: Wed Aug 29 13:40:48 2018
  xserver.configfile: default
  xserver.errors:
   evdev: Logitech USB Laser Mouse: Unable to open evdev device 
"/dev/input/event16".
   evdev: HID 046a:0023: Unable to open evdev device "/dev/input/event17".
   evdev: HID 046a:0023: Unable to open evdev device "/dev/input/event18".
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   
  xserver.version: 2:1.19.6-1ubuntu4~16.04.1

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