Cannot swipe to preview photos in another groups

[TarotChen]

Test Env:
~$ system-image-cli -i
current build number: 171
device name: krillin
channel: ubuntu-touch/rc-proposed/bq-aquaris.en
last update: 2015-11-12 08:12:47
version version: 171
version ubuntu: 20151110.1
version device: 20150821-736d127
version custom: 2015111

Pre-requisites:
Copy some photo taken a month ago to DUT

Steps:
1. take photos by camera
2. go to photo scope
3. tap on my photos
=>There are two groups "today" and "Previous 30 days"in my photos page
4. tap on a photo from "today" group to preview
5. Continue swiping left to preview the next photo

Actual:
Cannot swipe to preview photos in "previous 30 days" group

Expected:
Should be able to swipe to preview all photos displayed in my photos scope since they are stored under the same folder.