It only shows "January" when editing an existing calendar's time

current build number: 328
device name: krillin
channel: ubuntu-touch/rc-proposed/bq-aquaris.en
last update: 2016-05-09 23:05:46
version version: 328
version ubuntu: 20160509.2
version device: 20160329-a9bacdb
version custom: 20160505-975-38-9

Steps:
1.Open calendar app and create a event
2.Switch to agenda page and edit the event you've created
3.Change the time in "From" and "To" options

Expectation:
After step 3, the time sheet will display with years and months from January to December

Actual result:
After step 3, the months only display "January" on all 12 months