I can reproduce this issue on krillin with the latest rc-proposed image r309, the Youku video still keep playing when receiving a call.
$ adb shell system-image-cli -i
current build number: 309
device name: krillin
channel: ubuntu-touch/rc-proposed/bq-aquaris.en
last update: 2016-04-11 11:05:52
version version: 309
version ubuntu: 20160408.3
version device: 20160329-a9bacdb
version custom: 20160324--36-54-vivid
I can reproduce this issue on krillin with the latest rc-proposed image r309, the Youku video still keep playing when receiving a call.
$ adb shell system-image-cli -i touch/rc- proposed/ bq-aquaris. en -36-54- vivid
current build number: 309
device name: krillin
channel: ubuntu-
last update: 2016-04-11 11:05:52
version version: 309
version ubuntu: 20160408.3
version device: 20160329-a9bacdb
version custom: 20160324-