Contact number not filled if full name is entered but number is not selected from drop-down

Prerequisites:

A contact is in the address book with a name and number (e.g. 'Test Tester', '0011223344'

1. Open the messaging application
2. Swipe up to create a new message
3. Enter the full name of the contact (i.e. 'Test Tester') in the To: field
4. Tap on the 'Write a message...' field
5. Enter your message text
6. Tap on Send

Expected result:

Message is sent successfully (assuming sufficient credit and a valid number). Opening the message info shows the number of the contact

Actual result:

The message fails to send and opening the message info shows the To: field as blank

current build number: 410
device name: krillin
channel: ubuntu-touch/rc-proposed/bq-aquaris.en-proposed
last update: 2015-06-11 10:06:15
version version: 410
version ubuntu: 20150611
version device: 20150529-8e13c5f
version custom: 20150528-722-29-15-vivid