Response to default dropdown selection not registered in survey submission in call interface

[niklasva82]

1. Create survey with a dropdown question with 3 options, A, B and C
2. Add another question to the survey, it doesn't matter what
3. Create a call assignment and assign yourself as caller
4. Start calling
5. During a call, fill out question 2 in the survey but do not touch question 1 (will show option A as selected by default)
6. Report the call and submit the survey

Expected results: Option A should be selected in the submission
Actual results: The submission does not include a response to question 1