Gnome-shell "Power Off" dialog does not have focus

[Cubic PPA]

The gnome-shell "Power Off" dialog does not have focus when activated.
As a result, the user has to click twice to select an action:
- The first click is to give the dialog focus.
- The second click is to actually make a selection.

RECREATE ISSUE:

1. Click the "power button" icon at the top right of the Gnome-shell task bar.
2. Select the "Power button" icon.
3. The screen darkens, and the "Power Off" dialog is displayed, showing three options/buttons:
   Cancel, Restart, and Power Off.
4. Hover over the three buttons, and notice the buttons do not highlight on hover. [ISSUE]
5. Click an option, for example "Restart."
6. Notice that nothing happens (there are no visual indicators that the dialog did not have focus, and now has focus). [ISSUE]
7. Hover over the three buttons, and notice the buttons now *DO* highlight on hover.
8. Click an option, for example "Cancel."
9. Since the "Power Off" dialog now has focus (from step 6) the click action is handled.

DESIRED BEHAVIOR:

1. Click the "power button" icon at the top right of the Gnome-shell task bar.
2. Select the "Power button" icon.
3. The screen darkens, and the "Power Off" dialog is displayed, showing three options/buttons:
   Cancel, Restart, and Power Off.
4. The "Power Off" dialog *SHOULD* have focus.
5. Hover over the three buttons, and *DO* highlight on hover.
6. Click an option, for example "Restart," the click action is handled.

SYSTEM INFORMATION

Distribution: Ubuntu Gnome

$ gnome-shell --version
GNOME Shell 3.24.1

$ uname -a
Linux PS001 4.10.0-22-generic #24-Ubuntu SMP Mon May 22 17:43:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release --all
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 17.04
Release: 17.04
Codename: zesty

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1683867, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.