## Overview

Keyboard shortcuts in Gnome don't work while dropdown menu is open, e.g. the
dropdown in Power settings to set behaviour if power button is pressed.

## Steps to reproduce

1.  Open Gnome Settings and go to Power.
2.  Click into one of the dropdown menus.
3.  Try to take a screenshot of its options with the Print key, press Ctrl+Q,
etc.

## Actual result

Keyboard shortcuts have no effect.

Tested with Volume Up/Down keys, Ctrl+Q, and Print key on several dropdown
menus in Gnome settings as well as the settings for Nautilus.

## Expected result

Keyboard shortcuts trigger the assigned option, as if the dropdown was not
open.

## Build and hardware

USB/DVD iso on 64bit laptop, updated to build 0251.

## Additional information

Workaround for dead Print key: To take a screenshot of an open dropdown menu,
use the screenshot app.