The top and the bottom bar displays background colour when media player is opening.

[freya zhang]

Information:
current build number: 465
device name: krillin
channel: ubuntu-touch/rc-proposed/bq-aquaris.en
last update: 2016-11-07 10:20:23
version version: 465
version ubuntu: 20161105
version device: 20160606-ab415b2
version custom: 20160831-991-38-18

Steps:
1.Open the camera application.
2.Press the Video button.
3.Press the Record button.
4.Record the video for 10 seconds.
5.Press the Stop button.
6.Swipe right to view the photo roll.
7.Press the Play button on the video
8.Check the performance.

Actual result:
The top and the bottom bar displays background colour when
the video opens in the media player.

Expected result:
The screen should display media player interface completely,
instead of top and botton bar displays background colour.

Notes:The issue is also reproduced on Frieza device.