Screen locks when lid is closed even though action is set to "Do nothing"

[Albert Braden]

I'm using Ubuntu 16.04. Under System Settings->Power I set "Do nothing" for the lid close action. If I go into System Settings->Brightness & Lock and set the "Lock" toggle off, then the screen does not lock when I close the lid, but this also turns off the timeout lock. If I set the "Lock" toggle on, and set the "Lock screen after" time to 1 hour, then the screen locks immediately when I close the lid. Closing the lid should not lock the screen when the lid close action is set to "Do nothing." If it is going to lock after the lid is closed, it should wait the specified time.

Version output:

lbert@albert-Lenovo-ideapad-FLEX-4-1580:~$ uname -a
Linux albert-Lenovo-ideapad-FLEX-4-1580 4.10.0-42-generic #46~16.04.1-Ubuntu SMP Mon Dec 4 15:57:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
albert@albert-Lenovo-ideapad-FLEX-4-1580:~$ apt-cache policy ubuntu-system-settings
ubuntu-system-settings:
  Installed: (none)
  Candidate: 0.3+16.04.20160330-0ubuntu1
  Version table:
     0.3+16.04.20160330-0ubuntu1 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages