Comment 0 for bug 1618405

Exactly like bug #552920 but for Lockscreen and Integrated menus:

1. Click on the volume control to open the sound menu.
2. Move the pointer diagonally to click on the maximum volume button.
<https://launchpadlibrarian.net/42732636/Why_autoexpanding_indicators_are_a_bad_idea.png>

What often happens: The sound menu closes, and the menu next to it opens.
Screencast: <https://www.youtube.com/watch?v=lVUokjAlREs>
Example in an informal usability test: <https://www.youtube.com/watch?feature=player_detailpage&v=PgGbZfR6Vec#t=13m55s>

What should happen: The sound menu stays open.