The images of artists in my music are blurry in music scope

current build number: 66
device name: arale
channel: ubuntu-touch/rc-proposed/meizu.en
last update: 2015-07-22 06:56:02
version version: 66
version ubuntu: 20150722
version device: 20150709-8965e37
version custom: 20150716-819-8-42

Steps：
1.there are some music with artists' images in the phone
2.go to music scope
3.press my music and choose the artists in drop down options

Expectation:
After step 3#, the image of the artists will be clear

Actual result:
The image of the artists are blurry in music scope, but they are clearer in music app