Your poll options look good 
And I just tested it in my site and the feature is working correctly.
What happens if you try to create the poll manually using markdown?
For example:
[poll type=multiple results=always min=1 max=3 public=true chartType=bar groups=Discourse,Test]
# My amazing multi choice poll
* Option1
* Option 2
* Option 3
[/poll]
More options here: How to Create Polls